Western Australia in June 2012: An average month for most of WA

  • Rainfall: Near average for WA
  • Maximum temperature: Near average for WA
  • Minimum temperature: Near average for WA; above average for southwest WA

Rainfall

Rainfall during June 2012 was near average for much of WA. Above to very much above average rainfall was observed in the South Coastal district, Central West, eastern parts of the Central Wheat Belt, the southern Gascoyne and parts of the Goldfields. Most of the Southwest Land Division (SWLD) saw near average totals. 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 the Karratha area, while large areas of below average rainfall were observed in the Kimberley and central Interior.

When averaged across the state as a whole, June 2012 rainfall was near average. The Lower Southwest (southwest a line from Jurien Bay to Bremer Bay) also observed near average rainfall during June 2012; however, for the year to date (January to June) rainfall has been below average, primarily due to a very dry autumn (the 7th driest). Comparable rainfall records commenced in 1900.

June 2012 saw frequent rainfall in western and southern parts of the SWLD, with some sites recording rainfall on over 20 days in the month. A series of low pressure systems and cold fronts brought a number of significant weather events to the SWLD, which not only brought moderate to heavy rainfall, but also damaging winds and significant storm surges during the first half of the month, particularly between the 7th and 13th. The second half of the month saw mainly light to moderate rainfall events in the SWLD, with the passage of several more moderate cold fronts.

A slow moving trough and low pressure system moved over the SWLD at the end of May and the start of June, bringing moderate to heavy rainfall and thunderstorms 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 over 80 mm during the first two days of June. Warner Glen in the Southwest district recorded a total of 106.4 mm on the 1st, which was its wettest day in its 63 years of record. Tamaru in the South Coastal received a daily total of 116.2 mm on the 2nd, which was the highest daily total for any month in its 47 years of record, and also the heaviest daily rainfall event in the SWLD since late last year when 125.6 mm was recorded at Williams in the Great Southern on 13 December 2011. 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 low off the WA west coast on the 6th brought extensive cloud to much of the state resulting in areas of rain over much of western WA. Heavy falls were observed in the Pilbara and Central West, with totals over 50 mm reported near Roebourne, whilst highest June daily falls in 10 years were reported at some Pilbara sites.

A rapidly deepening tropical low off the northwest coast moved near the west coast during the morning and crossed the Southwest district during the afternoon on the 10th. The system brought very windy conditions to the Lower West, Southwest, South Coastal, and Great Southern districts. The highest recorded wind gust during the event was 146 km/h at Cape Naturaliste, which is the strongest wind gust observed at the site in almost 10 years or record, and the 4th strongest wind gust on record in Western Australia in the May to August period. Widespread property damage was reported in western parts of the SWLD with a significant number of trees downed, and 800 power lines southwest of a line from Geraldton to Ravensthorpe damaged. More than 170,000 homes lost power and it took several days for power to be restored to all residents in the region. A significant storm surge with minor coastal inundation was reported along the SWLD west coast. Some moderate to heavy falls were observed in the west Pilbara, west Gascoyne, and western parts of the SWLD during the event and a few locations in the northern Central West recorded their wettest June day on record as the result.

Most of WA, apart from the Kimberley, experienced a wet day on the 11th as a cold front moved through the SWLD and a cloudband moved across northwest and central parts of the state. Moderate to heavy falls were mainly confined to southern parts of the SWLD, whilst the west coast parts of the division endured more severe winds and a storm surge event.

A rapidly developing cold front and deep low pressure system moved through the SWLD during the afternoon and evening of the 12th, and through central and eastern parts of southern WA on the 13th. Widespread rainfall was recorded through the SWLD, with heavy falls in the 40 mm to 60 mm range in the Southwest and Lower West districts. Thunderstorms, moderate to heavy rainfall, and severe wind gusts were reported in the SWLD, particularly in the Southwest and neighbouring districts, as further roof damage was reported to buildings, trees were uprooted, and additional power lines were downed. Another storm surge occurred although it was weaker than previous recent events.

Maximum temperature

Above average maximum temperatureswere observed in much of western, central and southeastern WA in June 2012 , with areas of up to 3 °C warmer than normal in the western Interior. Below average daytime temperatures were mainly confined to the east Kimberley where temperatures were up to 2 °C cooler than normal.

When averaged across the state as a whole, the mean maximum temperature for WA during June 2012 was near average, whilst for the Lower Southwest, daytime temperatures were also near average. The Lower Southwest has experienced a very warm first half of 2012. The mean maxima for the first six months (January to June ) was 0.9 °C above normal and ranked the 5th warmest January - June period on record, largely due to an above average January and a very warm autumn (the 5th warmest). Comparable temperature records commenced in 1950. This "warm" run of temperatures has persisted for almost three years as the Lower West has only recorded two below average months, in terms of maximum temperature, since September 2009.

A trough inland from the west coast and a high to the south of the state brought a very warm day to the eastern Central Wheat Belt on the 2nd, with a daily maxima in mid-twenties. Narembeen registered its warmest June day in 41 years of record, with a maximum temperature of 25.9 °C, exceeding the previous record of 25.4 °C set on 7 June 1988. Conversely, the coldest day of the month was the 13th when a deep low brought a cold airmass over the SWLD, with daily maxima barely over 10 °C in the southern parts of the SWLD. Snow fell on Bluff Knoll in the Stirling Ranges in the South Coastal district on the morning and early afternoon of the 13th.

Minimum temperature

June 2012 saw below to very much below average minimum temperatures in northern and eastern parts of WA, with overnight temperatures up to 5 °C cooler than normal in the far northeast Kimberley. Western parts of WA, from the west Pilbara to the South Coastal, reported above to very much above average mean minimum temperatures, with areas up to 2 °C warmer than normal in the southwest Gascoyne and much of Central West.

When averaged across the state as a whole, the June 2012 mean minimum temperature was near average, whilst the Lower Southwest observed above average overnight temperatures. Comparable records commenced in 1950.

Cloudy skies and northerly winds in the western parts of the state brought a warm night to the southwest Pilbara on the 10th, and western Central West on the 11th, with Emu Creek Station and Kalbarri observing their warmest June nights on record on the 10th and 11th respectively.

During the first half of 2012, WA as a whole has observed its 7th coolest January to June period on record in terms of minimum temperature, with each of the first six months this year seeing a cooler than normal minimum. In contrast, the Lower Southwest has observed its 8th warmest start to the year on record, with May being the only month to record a below average monthly minimum. In fact the warm conditions have persisted for almost two years in the Lower West as May 2012 has been the only below average month for the region since October 2010.

Other Phenomena

A trough off the west coast of the SWLD associated with a low southwest of the state produced severe thunderstorms over the Lower West and neighbouring districts in the late morning and early afternoon on the 7th. Tornadoes struck the suburbs of Dianella and Morley in Perth, and near York in the Central Wheat Belt, causing significant damage to homes and businesses as 5000 properties lost power. The tornadoes were the result of non-cold front related severe thunderstorms, which are highly unusual in southwest WA in winter.

Further information

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Extremes in June 2012
Hottest day 34.2 °C at Wyndham Aero on the 15th
Warmest days on average 30.7 °C at Kalumburu
Coolest days on average 15.8 °C at Bickley
15.8 °C at Katanning
Coldest day 10.6 °C at Katanning on the 13th
10.6 °C at Mount Barker on the 13th
Coldest night -4.0 °C at Eyre on the 15th
Coolest nights on average 4.1 °C at Eyre
Warmest nights on average

21.9 °C at Troughton Island
15.5 °C at Onslow

Warmest night 24.7 °C at Troughton Island on the 3rd
22.3 °C at Port Hedland on the 11th
Wettest overall 303.3 mm at Tamaru
Wettest day 116.2 mm at Tamaru on the 2nd
Highest wind gust 146 km/h at Cape Naturaliste on the 10th

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Record highest June daily rainfall
Highest daily rainfall
in June 2012 (mm)
Previous wettest
for June
Years of
record
Eradu 62.2 on the 10th 58.9 on the 28th in 1910 70
Warner Glen 106.4 on the 1st 91.2 on the 20th in 1967 63
Coolangatta 54.4 on the 10th 42.0 on the 14th in 1982 61
Tamar 85.2 on the 2nd 65.8 on the 14th in 1990 51
Albany Airport Comparison 96.4 on the 2nd 61.6 on the 25th in 2007 49
Tamaru 116.2 on the 2nd 36.1 on the 25th in 2007 47



Record highest total June rainfall
Total rainfall
for June 2012 (mm)
Previous wettest
for June
Years of
record
Average for
June
Tamar 227.2 222.8 in 2005 52 91.3
Albany Airport Comparison 253.0 223.8 in 1978 48 108.0
Tamaru 303.3 186.0 in 2005 47 87.0



Record highest June temperature
Highest temperature
in June 2012 (°C)
Previous warmest
for June
Years of
record
Average for
June
Narembeen 25.9 on the 2nd 25.4 on the 7th in 1998 41 17.5



Record highest June daily minimum temperature
Highest daily minimum
temperature
in June 2012 (°C)
Previous warmest
for June
Years of
record
Average for
June
Emu Creek Station 22.2 on the 10th 21.3 on the 4th in 1991 41 12.6
Kalbarri 19.4 on the 11th 18.9 on the 28th in 2007 39 11.0


Summary statistics for June 2012
Maximum temperatures
for June
(°C)
Minimum temperatures
for June
(°C)
Rainfall
for June
(millimetres)
Mean for
June
2012
Diff
from
average
Highest for
June
2012
Mean for
June
2012
Diff
from
average
Lowest for
June
2012
Total for
June
2012
Average
for
June
Rank of
June
2012
Fraction of
June
average
North Kimberley (district 01)
Doongan         7.9 -3.5 4.3 26th 0 5.7 v low 0%
Kalumburu 30.7 -0.5 33.6 17th 12.3 -1.5 8.1 27th 0 3.5 v low 0%
Mount Elizabeth 28.3 +0.3 31.7 14th         0 12.8 lowest 0%
Troughton Island 27.5 -1.4 29.6 3rd 21.9 -1.4 19.1 25th 0.4 7.6 high 5%
Truscott 29.3   32.3 17th         0.4
Wyndham 29.9 -1.1 33.5 15th 14.4 -3.2 10.5 26th 0 3.9 lowest 0%
Wyndham Aero 30.3 -0.6 34.2 15th 13.7 -1.7 10.1 27th 0 3.8 v low 0%
East Kimberley (district 02)
Argyle Aerodrome 28.3 -0.8 33.6 15th 13.4 -2.5 9.1 25th 0 4.6 v low 0%
Halls Creek Airport 26.1 -1.1 31.3 15th 11.4 -2.2 7.8 21st 0 5.5 lowest 0%
Kununurra Aero 29.5 -0.7 34.0 14th 11.7 -4.2 7.7 21st 0 3.6 lowest 0%
Warmun 28.2 -1.2 33.5 15th 10.9 -2.8 6.5 6th 0 6.2 lowest 0%
West Kimberley (district 03)
Bidyadanga 29.8 0.0 34.0 17th 14.4 -1.0 10.5 1st 0 19.5 lowest 0%
Broome Airport 28.9 -0.2 32.8 17th 13.8 -1.4 7.9 25th 0 17.5 lowest 0%
Curtin Aero 30.1 -0.6 33.7 17th 14.4 -2.1 9.1 21st 0 8.4 v low 0%
Cygnet Bay 27.3 -1.4 29.8 13th 14.7 -1.7 10.0 27th 0 18.5 lowest 0%
Derby Aero 29.6 -0.8 32.9 17th 13.2 -2.4 6.1 27th 0 7.7 lowest 0%
Fitzroy Crossing Aero 29.6 -0.5 33.5 17th 10.5 -2.1 4.2 25th 0 7.9 v low 0%
West Roebuck 30.0 -0.5 33.2 17th 12.2 -0.4 3.6 25th 0 9.7 v low 0%
De Grey (district 04)
Bedout Island 25.2   29.0 10th        
Karratha Aero 26.2 -0.3 29.3 20th 14.6 -0.3 10.4 27th 57.4 29.7 high 193%
Legendre Island 24.7   27.9 12th 18.7   15.6 7th
Mandora 29.1 +0.1 33.0 9th     6.8 25th 1.8 16.8 average 11%
Marble Bar 27.0 +0.1 30.7 9th 12.9 -0.1 8.2 16th 5.0 13.4 average 37%
Pardoo Station 28.0 -0.3 31.0 18th 13.4 -1.3 8.4 23rd 17.7 26.6 average 67%
Port Hedland Airport 27.7 +0.1 30.9 17th 13.5 -0.6 8.6 23rd 11.2 20.7 average 54%
Roebourne 27.4 +0.4 30.7 20th 14.9 -0.4 10.0 1st 71.4 29.2 v high 245%
Roebourne Aero 27.1 -0.8 30.3 20th 13.0 -0.4 7.6 1st 83.0 23.4 v high 355%
Fortescue (district 05)
Barrow Island Airport 24.0 -0.3 27.4 10th 18.8 +0.2 15.1 27th 33.4 25.3 high 132%
Learmonth Airport 25.3 +0.5 28.7 10th 13.3 +0.2 6.5 2nd 13.8 41.3 low 33%
Mardie 28.3 +0.2 32.1 18th 13.8 0.0 8.4 1st 28.0 37.2 average 75%
Onslow 26.0 +0.5 28.7 29th 15.5 +2.2 10.1 1st 44.2 44.2 average 100%
Onslow Airport 26.5 +0.6 29.6 28th 15.1 +1.0 11.1 2nd 43.2 45.6 average 95%
Wittenoom 25.0 +0.5 28.7 28th 12.3 -0.5 6.8 1st 13.0 27.8 average 47%
West Gascoyne (district 06)
Carnarvon Airport 24.7 +1.4 29.1 18th 12.3 0.0 6.0 3rd 31.0 47.6 average 65%
Denham 23.5 +0.6 29.1 3rd 15.4 +1.5 11.4 22nd 80.9 54.7 high 148%
Emu Creek Station 26.6 +0.6 30.0 12th 13.1 +0.5 7.7 3rd 24.1 36.8 average 65%
Murchison 22.2 +0.3 27.0 2nd 9.1 +1.6 3.2 22nd 51.9 27.7 high 187%
Shark Bay Airport 24.1 +0.2 29.8 3rd 13.2 +1.4 8.8 18th 90.6 44.1 high 205%
East Gascoyne (district 07)
Newman Aero 23.0 -0.1 28.4 20th 7.2 +0.4 2.5 1st 5.2 13.8 average 38%
Paraburdoo Aero 25.2 0.0 29.7 9th 11.3 +0.3 6.8 1st 10.4 22.2 average 47%
Murchison (district 07A)
Meekatharra Airport 20.4 +0.7 25.2 19th 9.0 +0.2 3.0 22nd 17.0 30.0 average 57%
Mount Magnet Aero 19.7 -0.2 25.0 2nd 9.3 +1.1 1.9 22nd 48.8 21.1 high 231%
Paynes Find     26.2 2nd 8.5 +1.8 0.0 22nd 70.4 43.2 high 163%
North Coast (district 08)
Carnamah 19.7 +0.7 26.3 3rd 10.1 +1.4 4.5 21st 80.3 76.3 average 105%
Dalwallinu Comparison 18.7 +0.5 24.7 2nd 9.4 +1.5 2.9 22nd 72.6 63.8 high 114%
Geraldton Airport 21.5   28.4 4th 12.1   5.7 22nd 122.0
Geraldton Airport Comparison 21.4 +0.5 28.7 4th 12.3 +1.3 6.2 22nd 113.4 99.4 average 114%
Kalbarri 23.7 +0.9 29.6 4th 12.1 +1.1 4.4 22nd 104.1 81.5 high 128%
Morawa Airport 19.9 -0.2 26.0 2nd 9.7 +2.3 3.8 30th 97.2 41.5 v high 234%
Mullewa 20.7 +0.8 26.5 4th 10.3 +1.8 4.5 22nd 85.0 64.8 high 131%
North Island 22.7 +0.4 27.1 3rd 16.4 -0.3 13.3 5th 124.2 66.0 high 188%
Wongan Hills 18.7 +0.6 25.0 3rd 9.0 +1.3 2.5 22nd 90.0 71.4 high 126%
Central Coast (district 09)
Badgingarra Research Stn 19.0 +0.3 25.8 3rd 9.8 +1.4 4.7 21st 113.2 104.0 average 109%
Bickley 15.8 -0.2 21.2 3rd 9.0 +0.9 3.9 21st 228.6 205.6 average 111%
Champion Lakes 18.8   23.7 3rd 11.1   3.9 21st 149.8
Garden Island HSF 18.9 -0.2 23.1 3rd 12.8 +0.7 7.7 22nd 139.6 121.8 high 115%
Gingin Aero 19.3 -0.3 24.3 5th 8.9 +1.5 -0.3 22nd 139.2 120.8 average 115%
Gooseberry Hill 17.7 +0.3 23.6 3rd 10.8 +0.6 5.0 21st
Gosnells City 19.9 +0.3 25.5 3rd 10.6 +0.8 3.2 22nd 128.3 174.1 low 74%
Jandakot Aero 19.3 +0.4 24.3 3rd 9.2 +1.8 0.0 22nd 168.4 162.4 average 104%
Jurien Bay 21.2 +0.6 26.0 3rd 11.1 +0.8 2.3 23rd 123.4 108.6 average 114%
Karnet 16.5 +0.2 21.8 3rd 7.8 +0.5 1.4 23rd 199.0 216.5 average 92%
Lancelin 20.5 +0.3 26.2 5th 11.4 +0.6 5.0 22nd 118.2 123.2 average 96%
Medina Research Centre 19.5 +0.2 24.3 3rd 10.3 +1.3 2.1 22nd 153.2 148.3 average 103%
Pearce RAAF 19.2 +0.4 24.1 3rd 10.1 +0.7 1.7 22nd 140.8 135.1 average 109%
Perth Airport 19.3 +0.4 24.4 3rd 10.1 +1.1 1.3 22nd 132.8 162.0 average 82%
Perth Metro* 19.6 +0.3 24.2 3rd 10.2 +1.7 1.8 22nd 140.8 175.7 average 80%
Rottnest Island 19.1 +0.4 23.4 3rd 13.8 +0.5 9.8 21st 123.2 151.3 average 81%
Swanbourne 19.6 +0.3 24.7 3rd 11.5 +0.9 4.9 22nd 148.8 131.2 average 113%
South Coast (district 09A)
Albany 17.5 +1.0 20.9 17th 10.6 +1.6 7.2 14th 218.0 133.8 v high 163%
Albany Airport 17.0   20.9 9th 8.6   3.5 25th 279.0
Albany Airport Comparison 16.9 +0.3 20.7 9th 8.8 +0.7 3.2 25th 253.0 108.0 highest 234%
Bridgetown 16.9 +0.2 22.5 3rd 6.8 +1.7 -0.1 21st 169.0 115.7 high 146%
Bridgetown Comparison 17.8 +1.1 23.1 3rd 6.8 +1.6 0.6 21st 188.6 145.4 high 130%
Bunbury 18.6 +0.2 23.8 3rd 9.9 +1.9 1.3 21st 181.0 149.4 high 121%
Busselton Aero 18.0 +0.2 23.6 3rd 9.2 +1.7 2.1 21st 171.0 139.2 high 123%
Cape Leeuwin 18.2 +0.9 22.0 4th 13.2 +1.0 9.2 25th 186.8 176.8 average 106%
Cape Naturaliste 18.3 +1.0 21.4 5th 12.5 +1.0 7.5 21st 172.4 166.0 average 104%
Collie East 17.6   22.5 3rd 6.3   -0.6 21st 137.6 129.0 average 107%
Donnybrook 18.1 +0.7 22.7 4th 8.6 +2.0 1.0 21st 196.9 191.9 average 103%
Dwellingup 16.7 +0.8 21.3 3rd 7.7 +1.2 0.0 23rd 218.2 243.4 average 90%
Esperance 18.3 +0.3 22.5 2nd 9.0 -0.1 6.0 5th 86.6 80.5 average 108%
Esperance Aero 17.3 +0.1 23.8 1st 8.6 +0.2 5.2 21st 93.0 67.4 high 138%
Harvey 18.4 0.0 23.0 5th 9.5 +1.3 2.0 21st 200.8 154.1 average 130%
Hopetoun North 18.6 -0.6 22.1 18th 8.8 +0.2 5.0 14th 57.0 49.4 average 115%
Jarrahwood 17.7 +0.6 23.0 3rd 7.5 +2.2 -0.5 22nd 175.6 162.5 average 108%
Mandurah 18.7 +0.1 22.9 5th 12.5 +1.0 6.3 22nd 201.8 134.1 high 150%
Manjimup 16.1 +0.8 20.5 3rd 8.4 +1.0 2.7 22nd 134.6 165.8 average 81%
North Walpole 16.8   20.9 9th 10.2   5.8 14th 273.4
Pemberton 16.6 +0.7 21.1 3rd         192.8 192.4 average 100%
Rocky Gully 15.9 +0.4 20.1 3rd 8.1 +0.5 1.5 21st 150.8 90.3 v high 167%
Windy Harbour 17.9 +0.2 22.3 9th 11.0 +1.6 4.4 25th 186.4 176.3 average 106%
Witchcliffe 17.4 0.0 20.2 17th 10.3 +1.6 4.4 21st 267.2 175.3 high 152%
North Central (district 10)
Bencubbin 18.1 +0.7 25.0 2nd 8.6 +1.4 1.5 22nd 49.1 49.5 average 99%
Cunderdin Airfield 18.5 +0.1 24.1 3rd 7.6 +1.7 0.7 22nd 50.4 40.0 high 126%
Kellerberrin 18.3 +0.8 24.3 2nd 7.4 +0.7 0.0 22nd 39.2 54.3 average 72%
Merredin 18.2 +0.9 24.4 2nd 7.6 +0.9 0.1 22nd 52.0 49.8 average 104%
Northam 18.6 +0.7 23.6 3rd 7.6 +1.1 -0.6 22nd 81.4 80.4 average 101%
York 18.3 -0.1 24.0 3rd 6.9 +2.2 -0.5 22nd 103.4 65.2 high 159%
South Central (district 10A)
Beverley 18.2 +0.3 23.6 4th 7.9 +1.9 0.0 23rd 72.8 79.2 average 92%
Brookton 17.5 +0.4 23.8 4th 7.2 +1.7 1.0 23rd 64.3 86.7 average 74%
Corrigin 17.3 +0.9 22.7 2nd 6.2 +0.3 -0.5 22nd 56.8 61.1 average 93%
Hyden 18.4 +1.0 25.1 2nd 6.2 +0.6 -1.0 23rd 43.2 49.8 average 87%
Jacup 17.1 +0.4 21.2 2nd 6.9 +0.4 2.3 14th 51.6 40.6 high 127%
Katanning 15.8 -0.2 21.3 3rd 7.6 +0.9 3.0 21st 83.2 62.6 high 133%
Katanning Comparison 16.3 +0.8 21.3 2nd 6.6 +0.2 1.0 21st 88.2 76.6 high 115%
Lake Grace 17.1 +0.1 23.6 2nd 7.4 +1.1 1.5 23rd 35.6 32.7 average 109%
Lake Grace Comparison 17.0 +0.5 23.9 2nd 7.4 +0.7 1.8 23rd 33.4 50.6 low 66%
Narembeen 18.3 +0.8 25.9 2nd 7.2 +0.8 -0.4 22nd 39.2 52.6 average 75%
Narrogin 16.4 +1.0 22.0 3rd 7.3 +0.9 0.2 23rd 62.6 86.9 average 72%
Newdegate Research Station 17.2 +0.6 24.0 2nd 5.4 +0.3 0.0 23rd
Ongerup 16.6 +0.7 22.1 2nd 7.2 +0.5 2.2 23rd 56.8 49.3 high 115%
Pingelly 17.0 +0.7 22.2 3rd 7.7 +1.1 1.6 23rd 69.8 82.5 average 85%
Ravensthorpe 17.7 +0.5 23.2 1st 8.0 +0.2 3.1 14th 44.5 43.4 average 103%
Wagin 16.9 +0.6 22.0 3rd 7.0 +0.8 2.0 21st 55.9 73.0 average 77%
Wandering 16.8 -0.1 21.8 3rd 6.9 +2.4 -0.6 23rd 107.4 78.1 high 138%
Eucla (district 11)
Balladonia 18.8 +0.8 25.0 19th 5.7 -0.2 1.2 5th 22.8 26.1 average 87%
Eucla 19.0 +0.3 24.3 13th 7.7 -0.5 0.9 15th 20.6 30.2 average 68%
Eyre 19.4 +0.5 26.0 19th 4.1 -2.8 -4.0 15th 33.9 39.9 average 85%
Forrest 19.5 +0.5 24.4 13th 5.1 -0.9 -0.7 25th 11.2 17.0 average 66%
Red Rocks Point 18.5   24.8 19th 8.4   1.3 15th 33.4
South East (district 12)
Bulga Downs 20.2   25.8 19th 6.9   1.2 23rd 41.8 27.6 high 151%
Kalgoorlie-Boulder Airport 18.1 +0.6 24.2 19th 6.9 +0.7 1.3 23rd 19.4 28.4 average 68%
Laverton Aero 18.9 +0.6 25.1 19th 7.0 +0.1 0.2 22nd 23.8 15.8 high 151%
Leinster Aero 19.3 +0.1 26.2 19th 7.6 +0.3 0.5 23rd 19.4 16.4 high 118%
Leonora 18.9 -0.1 25.5 19th 7.5 +0.1 1.4 22nd 22.2 25.1 average 88%
Leonora Aero 19.4   26.1 19th 7.4   0.6 30th 19.8
Munglinup West 17.6 +0.1 24.1 1st 7.6 -0.1 2.9 14th 48.8 36.6 high 133%
Norseman Aero 17.7 -0.4 23.5 19th 5.5 +0.8 -0.5 30th 26.6 15.4 high 173%
Salmon Gums Res.Stn. 17.5 +0.6 23.9 1st 5.7 0.0 -0.6 25th 38.2 38.3 average 100%
Southern Cross Airfield 17.9 0.0 23.7 2nd 6.3 +1.9 -0.2 23rd 54.2 28.6 high 190%
Yeelirrie                 13.2 23.1 average 57%
North East (district 13)
Giles Meteorological Office 19.9 -0.4 25.6 13th 6.2 -1.9 0.0 23rd 1.4 17.3 average 8%
Telfer Aero 25.6 +0.3 28.7 11th 10.7 -1.2 5.4 25th 3.6 12.1 average 30%
Warburton Airfield 21.0 +0.3 25.9 20th 5.2 -1.2 -1.0 23rd 3.0 17.6 average 17%
Offshore Islands (district 200)
Christmas Island Aero 27.0 0.0 28.6 1st 23.6 +0.4 20.8 10th 83.2 153.9 average 54%
Cocos Island Airport 29.0 +0.5 30.0 23rd 24.8 +0.3 22.7 9th 219.6 211.8 average 104%
Varanus Island 24.4 -0.4 27.0 19th 20.4 -0.5 17.4 23rd 34.4 17.4 high 198%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Western Australia using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

This statement has been prepared based on information available at 10 am on Monday 2 July 2012. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

Records in this summary are based on sites with at least 30 years of data.

For PDF files of Perth Metro climate statistics for other months, please click here for extremes and here for averages.

Further information

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