Wednesday, 2 January 2013 - Annual Climate Summary for Western Australia - Product code IDCKGC11R0

Western Australia in 2012: A warm year

• Rainfall: Near average for WA; below average for southwest WA
• Maximum temperature: ninth-highest for WA; second-highest for southwest WA
• Minimum temperature: Near average for WA; above average for southwest WA

Rainfall in WA during 2012 was near average for the State as a whole, but below average for the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay). Wet months in November and December in the Lower Southwest meant that annual rainfall in the region during 2012 was below average, but not in the lowest 10 per cent of records, after a very dry autumn and winter.

Maximum temperatures were well above average for WA as a whole, with the State recording its ninth-warmest year on record. Very much above average maxima were also observed in the Lower Southwest, which recorded its second-warmest year on record only behind 2010. The Lower Southwest has seen a persistent run of above average monthly temperatures for over three years, with only two below-average months since October 2009. Since comparable annual records commenced in 1910, five of the seven hottest years in the Lower Southwest have occurred since 2006.

Extremes Maps Records Summaries Important notes the top

Rainfall

Averaged across WA as a whole, rainfall during 2012 was near average. The Southwest Land Division (SWLD) and Eucla recorded below- to very-much-below-average rainfall during 2012, whilst large parts of the Kimberley, east Pilbara, and Interior recorded above- to very-much-above-average rainfall. Wet months were observed for WA as a whole in January (sixth-wettest) and November (eleventh-wettest); while May (fifth-driest), July (third-driest), and August (tenth-driest) were in the lowest 10 per cent of records since 1900, mainly due to low rainfall over southern WA during these months. As a result of the relatively dry months in the middle of the year, WA recorded its third-driest April to October period. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) saw below-average rainfall during 2012, largely as a result of registering its eighth-driest autumn, and eighth-driest winter, which included the driest July for the region since comparable records commenced in 1900. The final two months of the year in the Lower Southwest saw very-much-above-average rainfall, with November ranking as eleventh-wettest on record and December sixth-wettest, thus the November–December period was fourth-wettest on record and elevated the annual rainfall total in 2012 above the lowest 10 per cent of records. January to October rainfall in the Lower Southwest was ranked seventh-lowest.

Significant rainfall events during the year were as follows:

• A monsoonal burst associated with tropical cyclone Iggy crossing the Pilbara coast resulted in very heavy and persistent rainfall in the west Kimberley between 26 and 29 January where Cygnet Bay and Cape Leveque both recorded 4 consecutive days of rainfall over 100 mm, an unprecedented event in WA weather recording history. Both sites recorded January daily rainfall records as a result of this event.
• March 2012 saw wet conditions through the Kimberley and adjacent parts of the Pilbara and Interior mainly due to a monsoonal burst during the middle of the month. Troughton Island in the north Kimberley recorded a daily total of 260.6 mm on the 14th, which is its third-wettest day in 27 years of observations, and the wettest day recorded in WA during 2012. During the same event, Home Valley observed 244.0 mm in the 24 hours to 9am on the 13th, the highest daily fall on the WA mainland during 2012, while Doongan observed 243.0 mm in the 24 hours to 9am on the 16th. In contrast, a lack of frontal or thunderstorm activity in the southwest of the State saw several sites observe their driest March on record, particularly in the Southwest district. Cape Leeuwin and Cape Naturaliste both recorded their lowest March rainfall in 116 and 109 years of record respectively.
• A slow-moving trough and low pressure system that moved over the SWLD at the end of May and the start of June brought thunderstorms and moderate to heavy rainfall to southern and eastern parts of the SWLD and adjacent Goldfields. A number of locations in the Southwest and South Coastal districts registered daily rainfall totals exceeding 80 mm during the first two days of June and numerous sites registered their wettest June day on record, whilst some also recorded their wettest day for any month. Peppermint Grove, in the South Coastal district, observed 174.2 mm on the 1st, which is a June record for the site, and the second-highest daily total for any month for the site in 106 years of record, only surpassed by 196.9 mm recorded on 6 May 1921. This was also the second-highest daily total for June on record for the SWLD. Warner Glen in the Southwest district and Kimberley in the South Coastal district recorded 106.4 mm and 88.2 mm respectively in the 24 hours to 9am on the 1st, their wettest days on record, while Tamaru, in the South Coastal district, received a daily total of 116.2 mm on the 2nd, its highest daily total for any month. Several sites in the South Coastal district recorded their highest June total rainfall with the combination of this event and above-average rainfall for the remainder of the month.
• A series of low pressure systems and cold fronts crossed southwest Western Australia from 7 to 13 June 2012 resulting in significant damage in the region. Two tornadoes were observed with one affecting inner northern Perth suburbs causing extensive localised damage. Cold fronts that brought with them significant wind gusts, some of which were the highest on record for the region, caused an unprecedented number of power outages to mainly western parts of the Southwest Land Division (SWLD), whilst record-high sea levels as a result of significant storm surges caused localised coastal and estuarine inundation. Cape Naturaliste recorded a wind gust of 146 km/h on the 10th as a low pressure system moved close to the Southwest district; this was the highest wind gust recorded in WA during 2012. Refer to Special Climate Statement 40 (http://www.bom.gov.au/climate/current/statements/scs40.pdf) for further information.
• Record-low rainfall was observed across a large part of southwest WA during July 2012, particularly in western districts, centred on the Lower West. Most sites in the region observed their driest July on record, including Perth, Northam, Goomalling, Narrogin, Wagin, and Collie; all of which have over 100 years of rainfall records. Averaged across the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), July 2012 was the driest July since comparable records commenced in 1900, with a mean across the region of just 39 mm. The very low rainfall during July 2012 was the result of persistent high pressure systems over southern WA during the month and a contraction of the usual fronts and westerly winds southwards.
• A strong cold front moved across western and central WA and into the southeast of the State on 28 November, with a secondary front moving over southwest WA in the afternoon and evening. The passage of an associated rapidly deepening low just off the WA southwest coast brought very strong winds to southern WA, with isolated thunderstorms in the Southwest and South Coastal districts. Numerous sites experienced their highest wind gusts for November in more than ten years, with maximum gusts in excess of 90 km/h reported across southern WA. Rottnest Island observed the strongest wind gust of 117 km/h. Such a strong storm in late spring is a rare occurrence and caused traffic congestion in Perth, with one lane closed on the Kwinana Freeway due to waves on the Swan River over-topping the sea wall, airport delays, and extensive power outages with reports of 50,000 houses affected. Squally conditions continued in southern and western parts of the SWLD on the 29th, and severe gusts were observed near the coast in the Lower West, Southwest, and Southeast Coastal districts, the highest being 117 km/h at Cape Leeuwin.
• A surface trough interacting with a middle level low near southwest WA produced thunderstorms and very heavy rainfall across parts of southwest WA on 12 and 13 December 2012, with a number of sites observing their wettest December day on record. Daily rainfall in excess of 50 mm was widespread across the Southwest and Lower West districts, with isolated heavier falls of over 100 mm. Slow-moving heavy thunderstorms over the Bunbury to Collie region produced extreme rainfall on the 13th, the highest report being 210.8 mm at Yourdamung Lake (northeast of Collie), which broke the record for the wettest December day on record in the SWLD, and was the fifth-wettest day on record in the SWLD for any month. Extreme rainfall was also observed in Collie, with sites at Collie and Collie East recording 157.2 mm and 135.8 mm respectively. As a result the town of Collie saw significant flash flooding with businesses and residences inundated.
  Refer to Special Climate Statement 42 (http://www.bom.gov.au/climate/current/statements/scs42.pdf) for further information.

Maximum temperature

Averaged across WA as a whole, maximum temperatures during 2012 were very-much-above-average, ranking as the ninth-highest on record. Much of the State recorded above- to very-much-above-average temperatures, with areas of highest on record in the Eucla, southern SWLD, west Gascoyne and northwestern Central West, with a number of sites observing their warmest or equal-warmest year on record. The only region of WA to see a below-average 2012 was the southeast Kimberley. Monthly mean maximum temperatures for WA were below average at the start of the year, but were consistently above average from April to December, and WA recorded its third-warmest April to November period since comparable records commenced in 1950.

The Lower Southwest saw very-much-above-average maximum temperatures, recording its second-warmest year since comparable records commenced in 1910, only behind the record set in 2010. The very-much-above-average year was largely due to an above-average January, a very-much-above-average autumn (fifth-warmest), and consistently above-average maxima from July to October. The Lower Southwest has seen a persistent run of above-average mean monthly maximum temperatures for over three years, with only two months below the average since October 2009. Also of note is that five of the seven hottest years in the Lower Southwest, since comparable annual records commenced in 1910, have occurred since 2006.

Significant maximum temperature events during the year were as follows:

• Widespread rainfall and overcast conditions brought a number of cooler-than-average days to the east Pilbara during the passage of tropical cyclone Lua in March. Several sites in the region experienced their coolest March day on record on the 17th, with Port Hedland Airport recording a daily maximum temperature of 24.1 °C, which is 12.7 °C below average and 1.7 °C below the previous coolest March day in 64 years of record at the airport. Port Hedland Airport also experienced its coolest March in terms of mean maximum temperature, as did Wittenoom (59 years of record), and Roebourne (54 years of record).
• Unseasonally hot conditions were observed in the Interior and adjacent Eucla to start April, with Giles observing its equal-hottest April day on record as it registered a maximum temperature of 38.3 °C on the 1st.
• Consistently warm temperatures over the northwest of WA throughout much of May 2012, associated with the lack of rainfall and clear skies, resulted in Carnarvon Airport, Onslow Airport, Learmonth Airport, and Geraldton Airport all observing their hottest May on record. Of note were hot days from the 2nd to the 4th where temperatures were up to 10 °C above normal in the west Gascoyne and west Pilbara.
• A high moving south of WA resulted in warm to hot conditions through northwest and central parts of WA from 16 to 21 August. Onslow Airport observed its warmest August temperature in 48 years of record on the 18th, with a maximum of 35.2 °C, while Roebourne Aerodrome equalled its highest August temperature in 11 years of record on both the 20th and 21st with maxima of 35.9 °C. A high over southern Australia brought warm to hot conditions to central and northern WA on 27 and 28 August. Fitzroy Crossing recorded the highest temperature in the State for August 2012 with 38.5 °C on the 27th, only slightly below its 42-year August record of 39.0 °C, whilst Telfer Aerodrome recorded a maximum temperature of 36.0 °C on the 28th, its equal-highest August temperature in 39 years of record. Very-much-above-average August temperatures saw many Pilbara sites record their warmest August on record, including Roebourne, which has 92 years of record.
• A cool, cloudy, and showery day across western and central parts of WA on 4 September saw unusually low maximum temperatures recorded. Brookton in the Great Southern recorded a maximum temperature of 10.6 °C, its equal-coolest September day in 45 years of record, while Mount Barker in the South Coastal observed the coldest day in WA during September 2012 with a maximum of just 9.8 °C. Another very cold day was observed in the southwest of the State in the wake of a cold front on 27 September, with Karnet in the Lower West recording a maximum temperature of 9.9 °C and most other sites in the area only reaching the low teens.
• Maximum temperatures during October 2012 were above to very much above average throughout almost all of WA and a number of sites in the SWLD, as well as Emu Creek in the west Pilbara, observed their hottest October on record, including Cape Naturaliste with 109 years of record. A particularly hot day was observed in western WA, away from the west coast, on the 21st as a trough deepened near the west coast and Paynes Find in the Gascoyne observed 39.8 °C, the site's hottest October day in 34 years of record.
• Hot conditions were observed across central and northwestern WA on 15 November, particularly in the central Pilbara where temperatures reached the mid-forties. Roebourne observed the highest temperature in the State with 46.4 °C. Maxima in excess of 40 °C continued across the Pilbara, inland Kimberley, and Northern Interior on the 16th, particularly in the central Pilbara where temperatures again reached the mid-forties. Roebourne Aerodrome observed the highest temperature on that day with 46.0 °C.
• A broad trough across inland northern WA resulted in hot conditions in parts of the Pilbara, Gascoyne and Interior on 19 through to 23 December, with temperatures reaching the mid-forties in the inland Pilbara and northwest Gascoyne. Emu Creek recorded a maximum of 47.3 °C on the 23rd, the highest temperature in WA in December 2012.
• A prolonged spell of hot weather was observed in southwestern WA from Christmas Day through to the end of December, with the hot weather extending across southern WA on the last day of the year. The hot conditions were due to a stagnant weather pattern consisting of a high in the Bight and a trough near the west coast directing generally hot easterly winds over the area with little relief from the seabreeze. Particularly hot conditions were observed on the 30th in the Southwest District, with Cape Naturaliste observing 37.7 °C, its hottest December day in 56 years of record, while Jarrahwood observed 40.5 °C which is an equal record for December. Busselton Aero observed 41.0 °C, its hottest day in 15 years of record, breaking the annual record of 40.2 °C set on 26 January 2012, while Witchcliffe's 40.6 °C equalled their annual record set on 26 January 2012 in 13 years of record.

Minimum temperature

Averaged across WA, minimum temperatures were near average, while for the Lower Southwest, overnight temperatures were above average during 2012. Much of western and southern WA reported above- to very-much-above-average annual mean minimum temperatures, whilst the Kimberley and large parts of the Interior reported below- to very-much-below-average minima.

The year began with relatively low minimum temperatures across much of the State with monthly mean minima averaged across WA below average from January to August, including the fifth-coolest May and the coolest July on record, before state-wide overnight temperatures warmed during the latter part of the year and WA recorded its third-warmest spring since comparable records commenced in 1950. For the Lower Southwest, overnight temperatures were generally above average in most months. January 2012 was the warmest January on record for the Lower Southwest, whilst only May and July saw below-average monthly mean minima.

Eyre in the Eucla district observed its lowest annual minimum temperature in 46 years of record, with an average overnight temperature of 9.3 °C, 0.5 °C below the previous record. This is remarkable given Eyre also recorded its warmest year in terms of the mean maximum temperature; however, 2012 was a relatively dry year at the site suggesting a lack of cloud ensured good conditions for day-time heating, as well as night-time radiative cooling.

Significant minimum temperature events during the year were as follows:

• Without the cooling effect of sea breezes, the warmest nights of January 2012 for most of western WA coincided with the hottest days, between the 26th and 27th. Jurien Bay in the Central West broke its highest January minimum record on the 26th, whilst Cape Leeuwin in the Southwest recorded two consecutive days with minima over 23 °C (23.5 °C on the 26th, and 23.1 °C on the 27th), both breaking its previous January record of 22.7 °C observed on 23 January 1989, from records commencing in 1907.
• A hot night due to cloudy conditions and warm northerly winds was observed in western parts of the SWLD on 1 February and throughout much of the SWLD on the 2nd, resulting in Hyden, in the Great Southern, recording its hottest night in 37 years of record with a minimum temperature of 26.5 °C.
• A strong high moved into the Bight in the wake of a cold front on 23 April, resulting in cool nights across much of the south of the State, with the coldest night of the month in WA observed at Eyre on the 25th when the temperature dropped to –0.1 °C. The cool air pushed northwards over subsequent days, resulting in cool nights over the north of the State to end the month. Wyndham observed its coolest April night in 45 years of record with 15.7 °C on the 30th, breaking its previous record of 15.9 °C set in 2011.
• Very cold nights were reported in the SWLD, Goldfields, Interior, and adjacent parts of neighbouring districts on 24 and 25 May, resulting in a number of sites in the SWLD observing their coldest May night on record. Another burst of cool air over the north from a strong high over WA in the following days, resulted in relatively low overnight temperatures, particularly in the Kimberley. Broome Airport observed its coolest May temperature in 73 years of record on the 27th, with a minimum of 8.1 °C, and then went lower the following day with a minimum of 7.7 °C. Mount Elizabeth, with 18 years of record, broke its previous May record of 3.7 °C (set on 28 May 1998) on six consecutive days, with minimum temperatures (26th to 31st) of 3.1 °C, 0.5 °C, –0.9 °C, 2.5 °C, 2.8 °C, and 1.7 °C, respectively. The –0.9 °C recorded on the 28th was the first sub-zero minimum temperature ever recorded by the Bureau of Meteorology in the Kimberley.
• When averaged across the State as a whole, the July 2012 mean minimum temperature ranked as the coldest on record for WA. The cool to cold overnight temperatures observed throughout much of WA during July 2012 were the result of persistent high pressure ridging across the south of the State resulting in generally clear skies and light winds, and an associated lack of rainfall, with frequent subzero minima observed at sites in central and southern WA throughout the month. Well-below-average minima were reported across large parts of WA in the last two days of June and first ten days of July, and Yeelirrie in the Goldfields observed nine consecutive subzero temperatures from 30 June to 8 July, which is the equal-longest spell of subzero nights at the site in 38 years of record, equal with nine subzero nights between 15 and 23 July 1997. WA's coldest nights in 2012 occurred at Yeelirrie on 7 July and Warburton Airfield on 8 July, both with minima of –4.2 °C.

Other notable events

• Tropical cyclone Heidi formed north of the Pilbara coast on the evening of 10 January and crossed the Pilbara coast as a category two system on the morning of the 12th, approximately 15 km east of Port Hedland. After landfall, Heidi moved on a south-southwest track and weakened into a tropical low over the southern Pilbara. Heidi produced sustained winds of 119 km/h and a maximum gust of 144 km/h at Bedout Island on the 11th, whilst Port Hedland Airport recorded maximum winds of 98 km/h and gusts to 131 km/h early on the 12th. Damage was mainly confined to uprooted trees and minor flooding, with large-scale power outages in South Hedland and Wedgefield. The decaying TC and low brought very heavy rainfall to various locations in the Pilbara and western Kimberley, with unconfirmed reports over 300 mm, and associated flooding.
• Tropical cyclone Iggy formed to the northwest of Exmouth, off the west Pilbara coast, on the morning of 26 January and remained offshore to the west of WA as it moved southward. Iggy moved in a generally southerly direction as a category two system west of the Gascoyne coast and weakened below tropical cyclone strength on the morning of 2 February before tracking eastward through northern parts of the SWLD on the 3rd, bringing heavy rainfall to locations in the northern Lower West and southern Central West, as well as near-gale-force winds to coastal locations in the Central West. As Iggy moved parallel with the west coast in late January and early February, an associated tidal surge was recorded at most towns from Onslow to Perth, peaking at 80 cm at Geraldton and 70 cm at Fremantle on 2 February.
• Severe tropical cyclone Lua formed during mid-March off the Pilbara coast before crossing the coast near Pardoo Station on the 17th as a category four system, and weakening as it tracked through central WA. Significant damage was reported from Pardoo Roadhouse and the Yarrie mine site with uprooted trees and damage to buildings. Lua caused moderate to major flooding of the De Grey river system in the east Pilbara, particularly in the vicinity of Tumbinna Pool and Nullagine. Ex-TC Lua moved through the Goldfields, Southeast Coastal, and Eucla between the 19th and 20th, bringing some significant rainfall. Lua was the fifth tropical cyclone in the Western Region for the 2011-12 season, and the second to cross the Pilbara coast.
• Tropical cyclone Mitchell formed out of a low well to the northwest of the Pilbara coast during the morning of 29 December. Mitchell moved in a generally south-southwest direction, remaining off the coast and weakening below cyclone strength during the morning of the 30th. Mitchell was a category 1 system and the first tropical cyclone for the Western Region in the 2012/13 season.

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Extremes in 2012
Hottest day	47.3 °C at Emu Creek Station on 23 Dec
Warmest days on average	35.7 °C at Fitzroy Crossing Aero
Coolest days on average	20.8 °C at Albany
Coldest day	9.8 °C at Mount Barker on 4 Sep
Coldest night	-4.2 °C at Yeelirrie on 7 Jul -4.2 °C at Warburton Airfield on 8 Jul
Coolest nights on average	8.5 °C at Collie East
Warmest nights on average	23.7 °C at Varanus Island 21.8 °C at Wyndham
Warmest night	32.7 °C at Emu Creek Station on 24 Dec
Wettest overall	1723.2 at Doongan
Wettest day	260.6 mm at Troughton Island on 14 Mar 244.0 mm at Home Valley on 13 Mar
Highest wind gust	146 km/h at Cape Naturaliste on 10 Jun

Extremes Maps Records Summaries Important notes the top

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Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

Extremes Maps Records Summaries Important notes the top

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Record highest daily rainfall
	Highest daily rainfall in 2012 (mm)		Previous annual wettest		Years of record
Collie	157.2	on 13 Dec	118.4	on 21 Jan 1982	109
Warner Glen	106.4	on 1 Jun	104.4	on 14 Jan 1954	63
Tamaru	116.2	on 2 Jun	112.7	on 2 Aug 1992	47
Kimberley	88.2	on 1 Jun	84.6	on 1 Apr 1983	44
Alexandra Bridge	107.2	on 1 Jun	82.0	on 27 May 2010	42

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Record highest annual mean daily maximum temperature
	Mean daily maximum temperature for 2012 (°C)	Previous annual warmest		Years of record	Annual average
Narrogin	23.6	= 23.6	in 2010	81	22.4
Manjimup	22.1	22.0	in 2011	71	20.3
Carnarvon Airport	28.9	= 28.9	in 1988	64	27.2
Eyre	24.8	24.3	in 2007	46	22.8
Esperance	22.7	= 22.7	in 1983	42	21.8
Ongerup	23.0	22.9	in 1972	41	21.7

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Record highest daily minimum temperature
	Highest daily minimum temperature in 2012 (°C)		Previous annual warmest		Years of record	Annual average
Hyden	26.5	on 2 Feb	26.3	on 5 Jan 1977	42	9.9

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Record lowest annual mean daily minimum temperature
	Mean daily minimum temperature for 2012 (°C)	Previous annual coolest		Years of record	Annual average
Eyre	9.4	9.8	in 2006	46	10.8

Extremes Maps Records Summaries Important notes the top

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Month by month
January Rainfall: sixth-wettest on record for WA Maximum temperature: third-coolest on record for WA; above average in southwest WA Minimum temperature: below average for WA; warmest on record in southwest WA An active monsoon across the north of WA, the passage of tropical cyclone Heidi across the Pilbara, and the influence of tropical cyclone Iggy off the west Pilbara coast, resulted in above- to very-much-above-average rainfall for much of the State during January 2012. A number of sites in the west Kimberley, Pilbara, and north Gascoyne registered their wettest January on record. Very heavy and persistent rainfall was observed in the west Kimberley between the 26th and 29th where Cygnet Bay and Cape Leveque both recorded 4 consecutive days of rainfall over 100 mm, an unprecedented event in WA weather recording history. Both sites recorded January daily rainfall records as a result of this event. Maximum temperatures in WA during January 2012 were much cooler than average over large parts of central and northern WA, but above average near the west coast. When averaged over the State, January 2012 was the third-coolest January on record. Minimum temperatures followed a similar pattern, with cooler-than-average temperatures in central and northern parts, and warmer-than-average nights in western and southern areas. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) experienced its hottest January in terms of overnight temperatures.
Rainfall rank	Maximum temperature rank	Minimum temperature rank
February Rainfall: near average; above average in southwest WA Maximum temperature: near average Minimum temperature: below average for WA; above average in southwest WA Rainfall during February 2012 was near average for much of WA. Below-average rainfall was observed in the north of the State due to a break in the wet season, whilst the eastern Eucla also saw below-average rainfall. Above-average rainfall was observed in the southwest Gascoyne and parts of the Southwest Land Division (SWLD), particularly near the west coast, mainly due to the passage of ex-tropical cyclone Iggy early in the month. Above-average rainfall was also reported in the central Interior. Maximum temperatures were near normal across much of the State during February 2012. Above average daytime temperatures were evident in the Kimberley, coastal Eucla and near the southwest Capes, while below average maxima were confined to the central Interior. Minimum temperatures were below to very much average over much of eastern WA, contrasting with above average overnight minima in the SWLD, and in patches of the west Gascoyne, west Pilbara and north Kimberley.
March Rainfall: above average for WA; fifth-driest March for southwest WA Maximum temperature: below average for WA; sixth-warmest March for southwest WA Minimum temperature: below average for WA, near average for southwest WA March 2012 saw wet conditions through the Kimberley and adjacent parts of the Pilbara and Interior mainly due to a monsoonal burst during the middle of the month. Above average rainfall was also observed in parts of central and southeastern WA, mostly as a result of ex-tropical cyclone Lua moving through the region. In contrast, below-average rainfall was observed in western and southwestern parts, with a number of sites observing their lowest March rainfall total on record, although March rainfall is typically low. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) experienced its fifth-driest March since comparable records commenced in 1900; whilst WA as a whole saw above-average rainfall. Much of northern, central and eastern WA saw below to very- much-below-average maximum temperatures in March 2012. Relatively cool days were evident through central WA during the middle part of the month due to the passage of Lua, and Port Hedland Airport observed its coolest March day, and month, on record. In contrast, very hot conditions were evident in western parts of the Gascoyne and Southwest Land Division (SWLD) during the first half of the month, with numerous locations observing multiple days over 40 °C. The Lower Southwest observed its sixth warmest March on record, primarily due to the hot start to the month, though WA as a whole recorded a below-average month for maximum temperatures. The pattern of minimum temperatures was similar to maximum temperatures, with mostly cooler-than-average conditions in northern, central and eastern parts, and warm conditions near the west and south coasts. Averaged across WA as a whole, March 2012 was below average in terms of the overnight temperature, whilst the Lower Southwest was near average. Severe tropical cyclone Lua formed during mid-March off the Pilbara coast before crossing the coast near Pardoo Station on the 17th and weakening as it tracked through central WA. Lua was the fifth tropical cyclone in the Western Region for the 2011-12 season, and the second to cross the Pilbara coast.
April Rainfall: below average Maximum temperature: near average for WA, above average for southwest WA Minimum temperature: below average for WA, above average for southwest WA Rainfall during April 2012 was below average in much of the southern half of WA apart from much of the Lower West, which recorded near-average to above-average April rainfall as a result of a rainfall event during the last few days of the month. In the north of the State, rainfall was mostly near-average, although parts of the east Kimberley experienced some heavy rainfall towards the end of the month. When averaged across the State, April 2012 rainfall was below average. Rainfall across the Southwest Land Division (SWLD) as a whole was also below average; however, the Lower Southwest (southwest a line from Jurien Bay to Bremer Bay) recorded near-average rainfall. Much of southern and western WA, as well as the Interior, saw above-average maximum temperatures in April 2012, with Eyre in the Eucla observing its warmest April on record, largely as a result of a very warm first half of the month. Below-average maximum temperatures were confined to the east Kimberley and coastal parts of the east Pilbara and far west Kimberley. Overnight temperatures were close to average for large parts of WA during April 2012, apart from areas of above-average maxima in much of the SWLD, eastern Eucla, and southeast and central Interior, and areas of below-average minima in the northern Goldfields, east Gascoyne, southeast Pilbara and much of the Kimberley.
May Rainfall: fifth-lowest on record for WA Maximum temperature: above average Minimum temperature: fifth-lowest on record for WA; near average for southwest WA Rainfall during May 2012 was below average throughout much of WA, with areas of very-much-below-average rainfall scattered throughout the State. When averaged across the State as a whole, May 2012 rainfall was very much below average and ranked as fifth-lowest on record. The Lower Southwest (southwest a line from Jurien Bay to Bremer Bay) also observed below average rainfall. Most of WA, apart from the northeast of the State, observed above-average day-time temperatures during May 2012, with consistently warm conditions across the month in the northwest resulting in some stations observing their warmest May on record. Overnight temperatures were below to very much below average in the Kimberley, east Pilbara, and northern and eastern Interior, with near-average conditions in the remainder of WA during May.
June Rainfall: near average Maximum temperature: near average Minimum temperature: near average for WA; above average for southwest WA Rainfall during June 2012 was near average for much of Western Australia. Above- to very-much-above-average rainfall was observed in isolated parts of western, central, and southern WA, and a number of sites in the South Coastal district observed their wettest June on record, partly due to a significant rainfall event early in the month. In what is typically a dry time of year in the north of WA, areas of above-average rainfall were observed in small parts of the Pilbara, particularly around Karratha, while large areas of below-average rainfall were observed in the Kimberley and central Interior. Above-average maximum temperatures were observed in much of western, central and southwestern WA during June, with below-average daytime temperatures only observed in the east Kimberley. Averaged across the State as a whole, the mean maximum temperature for WA during June was close to average. Minimum temperatures were below average in northern and eastern parts of WA, while western parts reported above- to very-much-above-average mean minima. Averaged across the State as a whole, the June mean minimum temperature was near average; however the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) observed above-average overnight temperatures. A series of low pressure systems and cold fronts crossed southwest WA from 7 to 13 June resulting in significant damage in the region. Two tornadoes were observed with one affecting inner northern Perth suburbs causing extensive localised damage. Significant wind gusts that were some of the highest on record for the region caused an unprecedented number of power outages to mainly western parts of the Southwest Land Division (SWLD), and unusually high sea levels as a result of storm surges caused localised coastal and estuarine inundation. Refer to http://www.bom.gov.au/climate/current/statements/scs40.pdf for further information.
July Rainfall: third-driest on record for WA; driest on record for southwest WA Maximum temperature: near average for WA; seventh-warmest on record for southwest WA Minimum temperature: lowest on record for WA; below average for southwest WA Record-low rainfall was observed across a large part of southwest WA during July 2012 particularly in western districts, centred on the Lower West. A large number of sites observed their driest July on record, many with over 100 years of rainfall records. Averaged across the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), July 2012 was the driest July on record whilst for the State as a whole it was the third-driest July on record (comparable records commenced in 1900). The very low rainfall during July 2012 was the result of persistent high pressure systems over southern WA during the month and a contraction of the usual fronts and westerly winds southwards. Most of WA saw below- to very-much-below-average mean minimum temperatures during July 2012, with areas of lowest on record in the central eastern and southeastern Interior, and in central and eastern parts of the Southwest Land Division (SWLD). As a result WA observed its coldest July on record (comparable records commenced in 1950). Above- to very-much-above-average maximum temperatures were observed over much of western WA during July 2012, resulting in the Lower Southwest observing its seventh-warmest July on record.
August Rainfall: tenth driest on record for WA Maximum temperature: second-highest on record for WA Minimum temperature: near average Rainfall during August 2012 was below to very much below average throughout most of WA, ranking as tenth-lowest on record for the State as a whole. Rainfall was particularly low in southeastern WA where several sites in the Eucla recorded less than 3 mm for the month and Eyre observed its lowest August rainfall in 83 years of record. The Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) observed below average rainfall again during August 2012, following its driest July on record, and has observed its fifth-driest January to August period since comparable records commenced in 1900. Maximum temperatures during August were above to very much above average throughout WA, with areas of highest on record throughout most of the Pilbara and parts of the west Kimberley where a number of sites registered their warmest August on record. When averaged across the State as a whole, the mean maximum temperature during August 2012 ranked as second-highest on record for WA, continuing a run since April of five consecutive above average months for the State. Mean maximum temperatures were also above-average in the Lower Southwest, with above average mean maxima for almost all months, except February, resulting in the third-warmest January to August period for this region since comparable temperature records commenced in 1950. Overnight temperatures were near average across WA as a whole in August 2012, with below- to very- much-below-average minimum temperatures observed across the Kimberley, adjacent Interior and coastal east Pilbara contrasting with above- to very-much-above-average minimum temperatures in large parts of central, western and southern WA.
September Rainfall: near average; above average for southwest WA. Maximum temperature: fourth-highest for WA; above average for southwest WA Minimum temperature: above average for WA; near average for southwest WA When averaged across WA as a whole, rainfall during September 2012 was near-average. Western parts of the Southwest Land Division (SWLD) saw near-average to above-average rainfall during September 2012, with small areas of very-much-above-average rainfall. Walpole in the South Coastal and sites in the western Great Southern observed their wettest September on record. In contrast, below- to very-much-below-average rainfall was observed in much of the central and southern Interior, and Eucla, as rainfall totals were generally low outside the SWLD. Maximum temperatures during September 2012 were above to very much above average throughout almost all of WA, with the State recording its fourth-highest mean maximum temperature since comparable temperature records commenced in 1950. Areas of highest on record were observed in southeastern and northern parts of the State. Eucla and Eyre, both in the Eucla district, observed their equal warmest and warmest September on record respectively. Minimum temperatures were above average for WA as a whole, with below- to very-much-below-average minimum temperatures in the northern Kimberley contrasting with above- to very-much-above-average overnight temperatures for much of the remainder of the State.
October Rainfall: near average for WA; eighth-driest for southwest WA Maximum temperature: seventh-highest for WA; second-highest for southwest WA Minimum temperature: seventh-highest for WA; above average for southwest WA Rainfall in the southern half of WA was mostly below to very much below average during October 2012, with sites in the South and Southeast Coastal, and Great Southern recording their lowest October rainfall. Averaged across the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), October 2012 rainfall ranked as eighth-lowest since comparable records commenced in 1900; whilst the SWLD ranked as fifth-lowest. The northern half of the State generally saw above- to very-much-above-average rainfall, with Paraburdoo in the Pilbara registering its wettest October in 37 years of records, albeit with a total of 32.8 mm for the month. As a result of the contrasting north and south, October rainfall was near-average for WA as a whole. Maximum temperatures during October 2012 were above- to very-much-above-average throughout almost all of WA apart from the east Kimberley and northeastern Interior, which saw near-average day-time temperatures. A number of sites in the Southwest Land Division observed their warmest October on record, including Cape Naturaliste with 109 years of record; whilst Emu Creek Station in the west Pilbara also recorded its highest October mean maximum temperature. When averaged across the State, the mean maximum temperature for October 2012 ranked as seventh-highest on record and the Lower Southwest ranked as second-highest on record. Much of the Kimberley and northeastern Interior saw below- to very-much-below-average overnight minima during October 2012; however, most of the remainder of WA recorded above- to very-much-above-average minimum temperatures, with sites in eastern parts of the SWLD and in the Goldfields reporting their highest October mean minimum temperature on record.
November Rainfall: eleventh-wettest for WA and southwest WA Maximum temperature: above average for WA; near average for southwest WA Minimum temperature: above average for WA; near average in southwest WA Rainfall during November 2012 was above- to very-much-above-average through most of the Southwest Land Division (SWLD), particularly in northern and eastern parts where numerous sites, many with over 100 years of record, observed their wettest November on record. Rainfall was also above- to very-much-above-average in the west and south Gascoyne, the Goldfields, east Pilbara, Southern Interior, western Eucla, and parts of the Kimberley, with some sites in the Kimberley observing record daily and monthly totals due to thunderstorm activity. The only part of WA to experience significant below-average rainfall was in eastern parts of the Northern Interior, and northeastern Southern Interior. Averaged across the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), November rainfall was very much above average and in the highest 10 per cent of observations, ranking as eleventh-highest on record. For the SWLD, area averaged rainfall was third-highest on record, while averaged across the State as a whole, November 2012 rainfall ranked as eleventh-highest on record. Comparable area-averaged records commenced in 1900. Maximum temperatures during November 2012 were above- to very-much-above-average in the west Kimberley, Interior, central Pilbara, northeast Gascoyne, Eucla, and South and Southeast Coastal districts, while northeastern parts of the SWLD and small areas in the west Pilbara saw below-average daytime maxima. The remainder of the State was generally within 1 °C of the average. When averaged across the State as a whole, the mean maximum temperature during November 2012 was in the above-average range, continuing a run of eight consecutive above-average months since April. Mean maximum temperatures were close to, but slightly above, average in the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay). Minimum temperatures were above- to very-much-above-average across an area stretching from the east Pilbara and west Kimberley into the Interior and Eucla. Above-average minima were also experienced in the west Pilbara and southeastern SWLD, while the remainder of the State was generally close to normal. When averaged across the State as a whole, the mean minimum temperature during November 2012 was above average, while the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) saw close to, but slightly above average, overnight temperatures.
December Rainfall: above-average for WA; sixth-wettest on record for southwest WA Maximum temperature: above-average for WA; sixth-highest on record for southwest WA Minimum temperature: third-highest on record for WA; fourth-highest on record for southwest WA Averaged across the state as a whole, rainfall during December 2012 was above-average, while for the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) rainfall ranked as the sixth wettest December since comparable records commenced in 1900. For the wider SWLD, December 2012 rainfall was above-average. Significant rainfall was observed in A surface trough interacting with a middle level low near southwest WA produced thunderstorms and very heavy rainfall across parts of southwest WA on 12 and 13 December 2012, with a number of sites observing their wettest December day on record. Daily rainfall in excess of 50 mm was widespread across the Southwest and Lower West districts, with isolated heavier falls of over 100 mm. Slow-moving heavy thunderstorms over the Bunbury to Collie region produced extreme rainfall on the 13th, the highest report being 210.8 mm at Yourdamung Lake (northeast of Collie), which broke the record for the wettest December day on record in the SWLD, and was the fifth-wettest day on record in the SWLD for any month. Extreme rainfall was also observed in Collie, with sites at Collie and Collie East recording 157.2 mm and 135.8 mm respectively. As a result the town of Collie saw significant flash flooding with businesses and residences inundated. Refer to Special Climate Statement 42 (http://www.bom.gov.au/climate/current/statements/scs42.pdf) for further information. When averaged across the state as a whole, the mean maximum temperature for December 2012 was above-average, continuing the run since April of consecutive mean maxima above the average. After a reasonably cool first half of December 2012, very hot conditions in the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) towards the end of the month resulted in the region observing its fifth hottest December since comparable records commenced in 1950.
Rainfall rank	Maximum temperature rank	Minimum temperature rank

Extremes Maps Records Summaries Important notes the top

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Summary statistics for 2012
	Maximum temperatures (°C)				Minimum temperatures (°C)				Rainfall (millimetres)
	Mean for 2012	Diff from average	Highest for 2012		Mean for 2012	Diff from average	Lowest for 2012		Total for 2012	Average annual total	Rank of 2012	Fraction of annual average
North Kimberley (district 01)
Kalumburu	33.7	-0.5	39.2	13 Sep	19.5	-0.8	7.6	29 May
Wyndham	34.9	-0.7	42.9	7 Dec	21.8	-1.4	10.5	26 Jun	947.1	817.3	high	116%
Wyndham Aero	35.5	-0.2	43.8	7 Dec	21.3	-0.9	8.9	12 Aug	714.8	834.9	average	86%
East Kimberley (district 02)
Argyle Aerodrome	34.6	0.0	44.0	7 Dec	21.1	-1.0	9.1	25 Jun	679.0	764.2	average	89%
Halls Creek Airport	33.0	-0.6	43.5	8 Dec	19.1	-0.9	7.1	7 Jul	587.0	566.4	average	104%
Kununurra Aero	34.9	+0.1	43.2	6 Dec	19.5	-1.8	6.7	7 Jul	959.4	828.2	high	116%
Warmun	34.5	-0.5	43.1	8 Nov					793.3	723.1	average	110%
West Kimberley (district 03)
Bidyadanga	33.7	+0.4	45.3	9 Dec			10.2	27 May	1021.8	514.3	v high	199%
Broome Airport	32.7	+0.5	43.0	9 Dec	20.7	-0.5	7.4	3 Aug	686.4	607.3	average	113%
Curtin Aero	35.5	0.0	43.4	8 Dec	19.8	-1.2	6.2	8 Jul	1141.0	863.7	high	132%
Derby Aero	34.3	-0.2	43.3	8 Dec	20.1	-1.4	6.1	27 Jun	899.8	690.8	high	130%
Fitzroy Crossing Aero	35.7	-0.2	45.0	8 Dec	18.8	-1.3	3.9	4 Jul	772.0	725.1	high	106%
West Roebuck	34.3	+0.4	45.0	9 Dec	19.1	-0.8	3.6	25 Jun	783.8	853.1	average	92%
De Grey (district 04)
Karratha Aero	32.5	+0.2	43.6	15 Nov	20.4	-0.4	7.3	7 Jul	273.8	295.6	average	93%
Marble Bar	35.1	-0.3	45.3	24 Dec	19.6	-0.8	5.4	9 Jul	404.8	352.9	average	115%
Port Hedland Airport	33.4	+0.2	42.7	10 Dec	19.3	-0.1	5.8	9 Jul	457.2	315.3	high	145%
Roebourne	34.7	+0.7	46.4	15 Nov	20.3	-0.2	6.4	8 Jul	344.4	312.3	average	110%
Roebourne Aero	34.4	-0.3	46.0	16 Nov	19.1	-0.7	4.5	8 Jul	426.4	272.2	high	157%
Fortescue (district 05)
Barrow Island Airport	29.5	+0.4	38.8	24 Dec	22.4	+0.2	11.8	15 Jul	235.8	291.2	average	81%
Learmonth Airport	32.6	+0.8	46.6	23 Dec	17.9	+0.2	4.0	6 Jul	163.0	251.9	low	65%
Mardie	34.1	+0.2	44.8	14 Feb	19.2	+0.5	5.9	9 Jul	133.6	274.6	low	49%
Onslow Airport	32.9	+1.0	44.8	13 Feb	20.0	+1.0	7.5	16 Jul	128.0	320.7	low	40%
Wittenoom	33.1	+0.2	44.5	24 Dec	19.5	-0.2	4.0	15 Jul	604.0	461.7	high	131%
West Gascoyne (district 06)
Carnarvon Airport	28.9	+1.7	43.7	28 Jan	17.3	+0.1	3.3	6 Jul	173.0	230.5	average	75%
Emu Creek Station					18.6	+0.4	5.6	7 Jul	303.6	299.2	average	101%
Shark Bay Airport	29.8	+0.9	44.8	24 Jan	16.7	+0.4	4.7	4 Jul	181.0	209.5	average	86%
East Gascoyne (district 07)
Newman Aero	31.7	-0.2	44.4	24 Dec					453.2	325.9	high	139%
Paraburdoo Aero	33.4	0.0	44.6	23 Dec	17.9	-0.1	1.8	6 Jul	453.0	323.1	high	140%
Murchison (district 07A)
Meekatharra Airport	29.4	+0.5	42.8	24 Dec	15.8	-0.1	1.8	13 Jul	293.0	239.0	average	123%
Mount Magnet Aero	29.0	+0.6	44.1	21 Dec	15.2	+0.2	1.9	22 Jun	220.0	261.3	average	84%
North Coast (district 08)
Geraldton Airport	27.5		43.9	31 Dec	14.2		1.8	25 Jul	314.4
Kalbarri	29.1	+1.5	44.8	27 Jan	15.4	+0.9	1.4	6 Jul	267.2	350.4	low	76%
Morawa Airport	28.5	+0.4	43.7	26 Dec	13.1	+0.4	1.3	25 Jul	296.0	289.6	average	102%
Mullewa	29.0	+1.1	44.5	26 Dec	14.3	+1.2	2.4	13 Jul	221.8	334.4	low	66%
North Island	25.8	+1.2	37.4	6 Mar	18.9	+0.4	7.7	16 Jul	285.8	288.7	average	99%
Wongan Hills	26.6	+0.9	42.2	26 Dec	12.4	+0.5	0.0	25 Jul	344.9	388.4	average	89%
Central Coast (district 09)
Badgingarra Research Stn	26.1	+0.2	41.8	26 Dec	12.6	+0.7	1.8	25 Jul	510.6	551.6	average	93%
Bickley	22.7	+0.2	38.6	31 Dec	11.7	+0.6	2.9	9 Jul	1063.6	1079.5	average	99%
Champion Lakes	24.8		40.8	31 Dec	14.1		2.7	25 Jul	711.0
Garden Island HSF	23.3	+0.7	40.2	25 Jan	15.2	+0.4	5.6	13 Jul	590.6	605.8	average	97%
Gingin Aero	26.0	+0.6	41.5	31 Dec	11.6	+0.7	-2.7	25 Jul	636.6	631.7	average	101%
Jandakot Aero	25.3	+0.8	41.5	26 Jan	11.8	+0.5	-1.6	25 Jul	684.4	827.4	low	83%
Jurien Bay	26.2	+1.4	43.2	24 Jan	13.6	+0.6	0.5	25 Jul	520.8	561.9	average	93%
Karnet	22.9	+0.4	39.0	28 Jan	10.9	+0.3	-0.6	28 Sep	1121.9	1170.1	average	96%
Lancelin	25.8	+1.7	42.7	25 Jan					479.8	600.2	low	80%
Pearce RAAF	26.2	+1.1	42.7	31 Dec	12.5	+0.3	-0.8	25 Jul	544.5	655.5	low	83%
Perth Airport	25.7	+1.3	42.2	31 Dec	12.6	+0.5	-0.7	25 Jul	647.4	773.2	low	84%
Perth Metro*	25.7	+1.1	42.1	31 Dec	13.2	+0.5	0.4	25 Jul	608.2	850.0	low	72%
Rottnest Island	23.2	+1.1	39.5	25 Jan	16.3	+0.7	8.9	28 Sep	493.6	682.7	low	72%
Swanbourne	25.3	+1.3	43.1	26 Jan	14.3	+0.5	3.9	25 Jul	694.8	724.1	average	96%
South Coast (district 09A)
Albany	20.8	+1.3	37.3	6 Mar	13.0	+1.3	4.5	10 Aug	913.5	931.3	average	98%
Bunbury	23.6	+0.6	40.4	25 Jan	11.4	+0.4	-0.1	25 May	765.6	729.1	average	105%
Busselton Aero	23.6	+0.6	41.0	30 Dec	10.4	+0.2	0.4	25 May	569.8	689.8	low	83%
Cape Leeuwin	21.1	+1.4	37.9	6 Mar	15.2	+1.1	7.1	9 Jul	770.0	967.4	low	80%
Cape Naturaliste	22.6	+2.0	37.7	30 Dec	13.7	+1.0	5.1	24 Jul	619.6	808.9	low	77%
Collie East	23.5		39.4	30 Dec	8.5		-3.1	25 May	776.8	730.5	average	106%
Donnybrook	24.2	+1.1	40.5	27 Jan	10.9	+1.2	0.0	9 Jul	861.6	975.5	low	88%
Dwellingup	23.1	+1.3	39.7	26 Jan	10.1	+0.6	-1.2	25 May	1119.8	1243.1	low	90%
Esperance	22.7	+0.9	42.4	23 Feb	12.5	+0.5	4.7	20 Jul	590.0	616.0	average	96%
Esperance Aero	22.9	+0.9	41.6	23 Feb	11.4	+0.1	3.2	20 Jul	549.8	565.2	average	97%
Harvey	24.2	+0.6	40.0	30 Dec					822.2	851.7	low	97%
Hopetoun North	22.4	+0.2	43.5	23 Feb	11.2	-0.3	0.9	11 Oct	458.6	498.7	low	92%
Jarrahwood	23.8	+1.3	40.7	26 Jan	8.7	+0.1	-3.0	24 May	809.4	924.7	low	88%
Mandurah	23.9	+0.8	41.1	25 Jan	15.2	+0.5	5.8	19 Jul	796.2	673.1	high	118%
Manjimup	22.1	+1.8	40.6	30 Dec	10.4	+0.7	1.8	9 Jul	683.2	1002.0	v low	68%
North Walpole	21.0		38.1	6 Mar	11.8		3.8	10 Aug
Pemberton	21.9	+1.6	39.6	31 Dec					1000.1	1188.6	low	84%
Rocky Gully	21.9	+1.1	40.9	30 Dec	9.8	+0.2	0.3	9 Jul	644.6	696.5	average	93%
Windy Harbour	20.9	+0.7	39.4	6 Mar					1032.2	1063.9	average	97%
Witchcliffe	22.4	+1.1	40.6	30 Dec	10.9	+0.3	0.6	24 May	1087.2	958.5	high	113%
North Central (district 10)
Bencubbin	26.1	+0.7	42.4	26 Dec	12.4	+0.8	0.1	19 Jul	339.4	316.2	average	107%
Cunderdin Airfield	26.7	+0.9	43.1	28 Jan	10.6	+0.2	-2.9	19 Jul	225.2	295.1	low	76%
Merredin	26.3	+1.3	42.5	26 Dec	11.9	+0.5	-2.5	25 Jul	315.7	325.9	average	97%
Northam	26.4	+1.1	42.2	26 Dec					329.9	428.1	low	77%
York	26.1	+0.6	42.3	28 Jan					345.7	378.4	low	91%
South Central (district 10A)
Beverley					10.4	+0.2	-2.6	19 Jul	323.4	418.7	low	77%
Brookton	25.0	+0.8	41.4	31 Dec	10.2	+0.5	-2.1	19 Jul	300.1	450.5	v low	67%
Corrigin	25.0	+1.3	41.6	31 Dec	10.2	+0.2	-2.3	19 Jul	237.8	371.9	v low	64%
Hyden	26.1	+1.1	42.0	31 Dec	10.3	+0.4	-3.5	19 Jul	280.0	339.5	low	82%
Katanning	23.1	+0.7	40.5	30 Dec	9.7	+0.2	-0.1	23 Sep	481.0	456.1	average	105%
Lake Grace	24.1	+0.7	40.6	31 Dec	10.7	+0.5	-1.1	18 Jul	283.0	331.2	low	85%
Narembeen	26.2	+1.0	42.0	28 Jan	11.2	+0.6	-1.6	25 Jul	322.0	332.3	average	97%
Narrogin	23.6	+1.2	40.5	30 Dec	10.1	+0.7	-1.2	9 Jul	350.2	494.9	v low	71%
Newdegate Research Station	24.3	+1.0	41.3	28 Jan	8.7	0.0	-2.6	20 Jul
Ongerup	23.0	+1.3	40.7	28 Jan	10.1	+0.3	-0.9	25 May	341.9	385.5	low	89%
Pingelly	24.5	+1.2	40.6	31 Dec	10.7	+0.3	-1.0	19 Jul	330.6	445.9	low	74%
Ravensthorpe	23.7	+1.0	41.2	23 Feb	11.1	+0.7	1.3	23 Sep	333.2	424.2	low	79%
Wagin	23.8	+0.9	40.7	30 Dec	9.8	+0.1	-1.0	9 Jul	334.8	434.1	low	77%
Wandering	24.0	+0.3	41.1	30 Dec	8.8	+0.4	-3.4	25 May	513.2	507.5	average	101%
Eucla (district 11)
Balladonia	25.5	+0.9	42.2	31 Dec	10.2	+0.4	-1.4	14 Aug	255.4	262.5	average	97%
Eucla	24.2	+1.4	43.3	19 Nov	12.1	-0.1	0.9	15 Jun	230.2	272.1	average	85%
Eyre	24.8	+2.0	45.4	22 Dec	9.4	-1.4	-4.0	15 Jun	257.7	309.8	low	83%
Forrest	27.3	+1.2	43.6	22 Dec	10.3	-0.6	-1.9	1 Jul	88.4	232.7	v low	38%
Red Rocks Point	23.2		43.9	24 Feb	12.9		1.3	15 Jun	202.6
South East (district 12)
Bulga Downs	28.9		43.0	17 Feb	13.2		-1.3	7 Jul	270.9	234.7	average	115%
Kalgoorlie-Boulder Airport	25.8	+0.5	42.6	17 Feb	12.3	+0.6	-1.1	14 Aug	241.0	264.2	average	91%
Laverton Aero	27.7	+0.9	43.8	22 Dec	13.9	0.0	-1.0	14 Jul	261.0	292.9	average	89%
Leonora	27.9	0.0	43.9	16 Feb	13.7	-0.2	0.1	16 Jul	282.4	236.5	average	119%
Munglinup West	23.8		42.6	23 Feb	10.7		2.6	28 Sep
Norseman Aero	25.3	+0.2	41.6	31 Dec	9.9	+0.1	-3.6	14 Aug	275.6	291.5	average	95%
Salmon Gums Res.Stn.	24.5	+1.1	41.3	31 Dec	9.1	+0.1	-3.3	9 Aug	325.2	353.2	average	92%
Southern Cross Airfield	26.2	+0.4	43.8	21 Dec	10.8	+0.6	-2.9	25 Jul	230.8	308.6	low	75%
North East (district 13)
Giles Meteorological Office	29.8	+0.5	43.8	24 Dec	15.0	-0.9	0.0	23 Jun	228.4	287.2	average	80%
Telfer Aero	34.3	+0.2	45.5	24 Dec	19.3	-0.1	4.4	4 Jul	251.0	363.8	average	69%
Warburton Airfield	30.2	+0.5	44.6	23 Dec	14.4	-0.3	-4.2	8 Jul	264.6	246.4	average	107%
Offshore Islands (district 200)
Cocos Island Airport	29.4	+0.4	31.2	6 Mar	25.1	+0.6	20.9	23 Sep	1464.6	1977.9	low	74%
Varanus Island	29.3	+0.3	37.7	13 Feb	23.7	+0.3	17.0	6 Jul	254.2	259.4	average	98%

Extremes Maps Records Summaries Important notes the top

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