Western Australia in January 2014: Wet in most of WA but dry in the southwest

  • Rainfall: fifth wettest for WA; equal ninth driest for southwest WA
  • Maximum temperature: near average for WA; eleventh highest for southwest WA
  • Minimum temperature: above average for WA

    Rainfall

    January 2014 rainfall was above to very much above average over much of northern, central and southeastern WA. A number of sites in the Kimberley, east Pilbara, east Gascoyne, Goldfields, and Eucla recorded their wettest January on record, some sites with over 100 years of rainfall records, mainly due to the passage of a deep tropical low and associated cloudband during the latter part of the month. In startling contrast, southwest WA and pockets in the southwest Gascoyne, saw below to very much below average rainfall, with little to no rainfall recorded during the month. Mount Barker in the South Coastal recorded 0.8 mm for the month, its lowest January total in 128 years of record, whilst a number of other sites in the South Coastal recorded their driest January in at least 30 years.

    Averaged across WA as a whole, rainfall in January 2014 was the fifth highest since comparable records commenced in 1900, but in contrast it was the equal ninth driest January for the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay). Averaged across the Southwest Land Division (SWLD), January 2014 rainfall was near average, but there was strong contrast between very dry conditions in the southwest, and above average rainfall in eastern parts.

    Ex-tropical cyclone Christine moved through the east Gascoyne, northern Goldfields, southern Southern Interior, and Eucla on the first two days of January bringing with it some heavy rainfall. Mount Clere in the Gascoyne recorded 84.0 mm on the 1st, its highest January daily fall in 70 years of record, whilst Wiluna in the northern Goldfields recorded 100.2 mm, its highest daily rainfall in January in 109 years of record, and its third highest daily fall for any month.

    An intense tropical low moved over the east Kimberley on the 16th after moving through the Top End of the Northern Territory and moved southwest through the Northern Interior and east Pilbara, then south through the east Gascoyne before it weakened and dissipated in the Goldfields on the 23rd. The low and associated cloudband produced widespread showers, thunderstorms, and heavy rain over northern, central, and southeastern WA, and numerous sites broke their highest daily rainfall record for January during this event. Mingah Springs in the northeast Gascoyne recorded a daily rainfall total of 183.3 mm on the 22nd before the rain gauge was impacted by localised flooding. This was the the highest daily rainfall of the month in WA, and it was the wettest day for any month in 24 years of record at the site; the previous record was 106.6 mm on 25 March 1999. Edjudina and Leonora in the Goldfields recorded daily rainfall totals of 127.0 mm and 109.2 mm respectively on the 23rd, and for both it was their wettest day for any month in 110 years of record. The previous record for Edjudina was the 98.0 mm on 27 February 1995, and for Leonora was 105.9 mm on the same day, which coincided with the passage of ex-tropical cyclone Bobby through the region.

    A weak cold front moved through southwest WA on the 15th and 16th, bringing light rainfall to mainly the Southwest, Lower West, and South Coastal districts. For some sites, it was their only rainfall for the month.

    Maximum temperature

    Mean maximum temperatures were near average over large parts of the State, however above to very much above average mean maximum temperatures were recorded in western parts of WA, in the west Kimberley, and in the eastern Southern Interior and eastern Eucla, whilst below average mean maximum temperatures generally followed the passage of the tropical low in the middle of the month, and were observed in eastern parts of the Kimberley, the Northern Interior, east Pilbara, southern Goldfields, and western Eucla.

    Averaged across the state as a whole, the mean maximum temperature for WA in January 2014 was near average. For the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) however, sunny conditions with little or no rainfall produced very much above average temperatures, and the eleventh hottest January since comparable records commenced in 1910. Jarrahwood and Manjimup in the Southwest recorded their equal warmest January on record, whilst Ongerup in the South Coastal recorded its warmest January in 47 years of record.

    For the Kimberley, Pilbara and Northern Interior districts, the month was divided by mostly above average temperatures in the first half of the month, then below average temperatures in the second half of the month, though the Pilbara experienced cooler than normal days at the start of the month following the passage of tropical cyclone Christine at the end of December 2013. Particularly high temperatures were recorded in the west Pilbara in the second week of January, and Emu Creek Station recorded a maximum of 49.2 °C on the 10th, which was the highest temperature of the month in WA, and was also the highest January temperature in 42 years of record at Emu Creek Station. Onslow Airport recorded two consecutive days with maximum temperatures at or above 48 °C, on the 8th (48.7 °C) and 9th (48.2 °C), which was only the second time in 47 years of record that the Airport had recorded two or more days at or above 48 °C. The previous occurence was three days between 19 and 21 January 2003. The maximum of 48.7 °C on the 8th at Onslow Airport was its equal-third highest January temperature on record.

    The very high temperatures in the west Pilbara gradually propagated southward through western parts of the State. The 11th was particularly hot near the west coast and the hottest day of the month in the Perth metropolitan area as Swanbourne reported its first temperature above 44 °C (44.3 °C) in 20 years of recording, whilst the 12th was a particularly hot day in the Central Wheat Belt, Great Southern, and neighbouring South Coastal as a number of sites recorded their highest January temperature on record. With over 100 years of temperature recording at Kellerberrin, the maximum temperature of 47.5 °C on the 12th was 1 °C above the previous January record set on 10 January 2010, and also equalled the record for any month, equal with 47.5 °C on 3 February 2007.

    Some relatively cool days were recorded during the passage of the tropical low through WA from the middle of the month and Kalgoorlie-Boulder Airport recorded a maximum temperature of 19.0 °C on the 22nd, which was the lowest maximum temperature of the month in WA.

    Minimum temperatures

    Mean minimum temperatures were above to very much above average for most of the southern half of the State in January 2014, with means up to 3 °C warmer than normal in the Southern Interior. A mean minimum temperature of 19.6 °C at Merredin in the Central Wheat Belt was the warmest at the site in January in 48 years of record, whilst Bencubbin to the north recorded its equal warmest January nights in 61 years of record. The mean minimum temperatures were near average for much of the northern half of the State.

    The mean minimum temperature in January 2014 was above average for the state as a whole, as well as for the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay).

    Relatively cool nights were reported in the Kimberley on the 8th and 9th during a period of clear cloud free conditions. Warmum in the east Kimberley recorded a minimum temperature of 19.0 °C on both the 8th and 9th, equalling its lowest January temperature in its 52 years of record of 19.0 °C on 28 January 1976. In contrast, very warm nights were reported in the west Pilbara in the second week of January in association with very high day-time temperatures. Following a maximum of 46.0 °C on the 9th, Paraburdoo Aerodrome reported a minimum of 32.4 °C on the 10th, the highest minimum temperature in WA in January 2014.

    For the SWLD, warm nights were recorded on the 7th, 11th to 13th, 20th to 27th, and on the 30th and 31st. The warmest night was the 12th for most of sites in the SWLD, with a few sites recording their warmest January night on record. A minimum temperature of 31.2 °C on the 12th at Pearce RAAF was the highest minimum temperature of the month in the SWLD, and the highest minimum temperature at the site for any month in its 53 years of record. Perth Metro recorded a minimum of 29.7 °C on the 12th, which was the hottest night for any month in 116 years of record, the previous record being 29.3 °C on 6 February 1898, 8 February 1933, and 3 February 1962. Cool to cold nights were observed from the 2nd to 4th across much of the SWLD, following the passage of a weak cold front near the southern coast and some cooler southerly air moving over the region. A minimum of 3.6 °C on the 3rd at Jarrahwood in the Southwest was the lowest temperature for the month in WA.

    Other Phenomena

    A fire was reported in Parkerville, about 30km east of Perth, at approximately 11 am on the 12th and affected the townships of Parkerville, Stoneville, and Mount Helena, in the Shire of Mundaring, . A total of 52 houses were destroyed, while one fatality was attributed to the event when a man died after collapsing on his roof while preparing his house for the fire.

Further information

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Extremes in January 2014
Hottest day 49.2 °C at Emu Creek Station on the 10th
Warmest days on average 42.2 °C at Emu Creek Station
Coolest days on average 23.8 °C at Albany
Coldest day 19.0 °C at Kalgoorlie-Boulder Airport on the 22nd
Coldest night 3.6 °C at Jarrahwood on the 3rd
Coolest nights on average 12.3 °C at Jarrahwood
Warmest nights on average 27.2 °C at Bedout Island
Warmest night 32.4 °C at Paraburdoo Aero on the 10th
Warmest on average overall 33.2 °C at Emu Creek Station
Coolest on average overall 19.0 °C at Hopetoun North
Wettest overall 453.6 mm at Waterloo Bore
Wettest day 183.3 mm* at Mingah Springs on the 22nd
Highest wind gust 148 km/h at Shay Gap on the 14th

* note, it is possible this total could be higher but the rain gauge was impacted by local flooding


Maps

Maps

Observed Anomaly Decile 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 January daily rainfall
Highest daily rainfall
in January 2014 (mm)
Previous wettest
for January
Years of
record
Edjudina 127.0 on the 23rd 92.0 on the 4th in 2007 110
Leonora 109.2 on the 23rd 98.2 on the 10th in 2006 110
Bulong 127.6 on the 23rd 116.5 on the 22nd in 1987 109
Wiluna 100.2 on the 1st 82.3 on the 5th in 1913 109
Three Rivers 130.0 on the 22nd 84.4 on the 18th in 2012 94
Doolgunna 151.0 on the 22nd 90.7 on the 26th in 1961 84
Ora Banda 112.3 on the 23rd 100.8 on the 23rd in 2000 78
Mount Clere 84.0 on the 1st 77.5 on the 26th in 1961 70
Neds Creek 110.4 on the 22nd 78.0 on the 9th in 1997 68
Eyre 62.1 on the 24th 51.2 on the 24th in 2000 67
Mount Amhurst 123.6 on the 18th 121.9 on the 11th in 1930 58
Rawlinna Homestead 66.8 on the 24th 35.0 on the 22nd in 1987 51
Arubiddy 84.8 on the 24th 47.0 on the 23rd in 2000 50
Cowarna Downs 121.2 on the 23rd 97.6 on the 22nd in 1987 46
Rawlinna Depot 85.0 on the 24th 48.4 on the 22nd in 1987 45
Bulga Downs 101.0 on the 23rd 64.4 on the 10th in 2006 33
Argyle Aerodrome 138.2 on the 16th 101.0 on the 5th in 1997 30



Record highest total January rainfall
Total rainfall
for January 2014 (mm)
Previous wettest
for January
Years of
record
Average for
January
Bulong 174.0 143.9 in 1987 118 21.2
Leonora 172.0 168.4 in 2006 117 25.9
Edjudina 230.5 129.9 in 1942 113 22.6
Turee Creek 173.0 164.3 in 2006 91 42.5
Bulga Downs 229.8 200.7 in 1939 90 30.4
Doolgunna 288.4 172.2 in 1963 85 34.2
Ora Banda 215.7 210.1 in 1939 78 29.4
Rawlinna Homestead 112.0 81.6 in 2006 51 16.2
Arubiddy 154.4 146.9 in 2000 50 20.0
Cowarna Downs 194.4 123.6 in 1987 46 22.4
Rawlinna Depot 194.2 90.6 in 2000 45 23.2
Kununurra Aero 358.8 352.2 in 1984 42 202.4
Telfer Aero 173.0 146.2 in 2006 41 52.1

Highest total January rainfall for at least 30 years
Total rainfall
for January 2014 (mm)
Most recent January
at least this wet
Years since
wetter
Average for
January
Wiluna 203.9 231.9 in 1902 112 36.6
Yundamindra 116.6 124.3 in 1960* 53 26.0
Kalgoorlie-Boulder Airport 177.4 185.9 in 1967 47 26.3

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.




Record lowest total January rainfall
Total rainfall
for January 2014 (mm)
Previous driest
for January
Years of
record
Average for
January
Mount Barker 0.8 1.0 in 1914 128 23.2

Lowest total January rainfall for at least 30 years
Total rainfall
for January 2014 (mm)
Most recent January
at least this dry
Years since
drier
Average for
January
Manjimup 1.2 0.0 in 1964* 49 19.4
Albany 3.2 1.8 in 1970 44 23.8
Tamar 2.2 1.4 in 1984 30 24.1

* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported.




Record highest January temperature
Highest temperature
in January 2014 (°C)
Previous warmest
for January
Years of
record
Average for
January
Northam 46.3 on the 12th 46.2 on the 3rd in 2008 108 34.2
Kellerberrin 47.5 on the 12th 46.5 on the 10th in 2010 101 34.0
Narrogin 43.7 on the 12th = 43.7 on the 30th in 1930 92 31.0
Corrigin 45.9 on the 12th 44.9 on the 3rd in 1997 64 32.5
Ongerup 44.5 on the 12th 44.1 on the 3rd in 1997 48 28.6
Brookton 45.2 on the 12th 44.9 on the 3rd in 1997 47 32.9
Beverley 46.4 on the 12th 45.6 on the 3rd in 1997 44 34.2
Pingelly 44.4 on the 12th 44.1 on the 3rd in 1997 43 31.9
Emu Creek Station 49.2 on the 10th 49.1 on the 2nd in 2010 42 41.2
Wagin 44.0 on the 12th 43.7 on the 3rd in 1997 40 31.0
Goomalling 46.5 on the 12th 45.6 on the 24th in 1980 35 34.7



Record highest January mean daily maximum temperature
Mean daily maximum
temperature
for January 2014 (°C)
Previous warmest
for January
Years of
record
Average for
January
Manjimup 29.4 = 29.4 in 2012 74 27.1
Ongerup 30.7 30.6 in 1997 47 28.6
Jarrahwood 31.6 = 31.6 in 2012 31 29.5



Record highest January daily minimum temperature
Highest daily minimum
temperature
in January 2014 (°C)
Previous warmest
for January
Years of
record
Average for
January
Perth Metro 29.7 on the 12th 27.8 on the 21st in 1989 116 18.1
Perth Airport 28.5 on the 12th 27.8 on the 15th in 2013 70 17.0
Pearce RAAF 31.2 on the 12th 30.6 on the 31st in 1984 54 17.0
Wongan Hills 30.5 on the 12th 29.4 on the 26th in 1968 47 17.8



Record lowest January temperature
Lowest temperature
in January 2014 (°C)
Previous coolest
for January
Years of
record
Average for
January
Warmun 19.0 on the 8th and 9th = 19.0 on the 28th in 1976 52 24.8



Record highest January mean daily minimum temperature
Mean daily minimum
temperature
for January 2014 (°C)
Previous warmest
for January
Years of
record
Average for
January
Bencubbin 20.1 = 20.1 in 1958 61 18.1
Merredin 19.6 19.3 in 2011 48 17.8



Summary statistics for January 2014
Maximum temperatures
for January
(°C)
Minimum temperatures
for January
(°C)
Rainfall
for January
(millimetres)
Mean for
January
2014
Diff
from
average
Highest for
January
2014
Mean for
January
2014
Diff
from
average
Lowest for
January
2014
Total for
January
2014
Average
for
January
Rank of
January
2014
Fraction of
January
average
North Kimberley (district 01)
Doongan 33.2 0.0 37.8 10th 22.7 -0.1 19.8 8th 343.4 301.5 average 114%
Kalumburu 34.0 +0.2 38.6 8th 24.4 -0.2 21.8 6th 377.2 308.7 high 122%
Mount Elizabeth 33.3 +0.3 38.0 9th 21.8 -0.3 15.7 9th 249.1 255.5 average 97%
Troughton Island 31.4 -0.4 33.6 3rd 26.2 -0.2 22.7 6th 244.2 268.9 average 91%
Truscott 31.9   36.4 3rd 25.1   21.5 6th 264.0 334.6 average 79%
Wyndham 36.0 -0.9 41.1 3rd 26.1 -0.2 22.5 25th 219.4 185.7 average 118%
Wyndham Aero 36.2 -0.3 41.2 9th 25.9 -0.3 22.7 25th 197.8 189.9 average 104%
East Kimberley (district 02)
Argyle Aerodrome 35.8 -0.8 41.1 10th 25.6 -0.1 22.4 12th 280.6 156.6 v high 179%
Halls Creek Airport 35.9 -0.9 41.2 11th 24.1 -0.2 20.4 9th 318.4 153.1 v high 208%
Kununurra Aero 35.8 -0.1 41.0 9th 24.4 -0.7 18.8 9th 358.8 202.4 highest 177%
Warmun 35.8 -1.5 40.7 10th 24.2 -0.6 19.0 8th 285.5 179.7 high 159%
West Kimberley (district 03)
Bidyadanga 34.7 +0.3 42.0 5th 26.2 +0.2 23.0 25th 217.2 127.7 high 170%
Broome Airport 33.4 +0.1 40.4 5th 26.5 +0.2 22.9 26th 390.0 181.6 high 215%
Curtin Aero 36.8 +0.3 42.7 8th 25.0 0.0 22.8 17th 166.2 213.0 average 78%
Derby Aero 35.9 +0.7 41.8 8th 25.9 +0.2 22.7 15th 115.2 198.8 low 58%
Fitzroy Crossing Aero 39.5 +1.8 44.5 12th 25.2 0.0 19.7 8th 166.4 165.9 average 100%
Lombadina Airstrip 32.8   37.4 3rd 26.0   22.9 18th 101.2
West Roebuck 34.1 -0.2 41.3 5th 25.4 +0.1 22.9 26th 253.4 207.7 average 122%
De Grey (district 04)
Bedout Island 32.6   35.4 5th 27.2   23.9 26th
Karratha Aero 36.0 0.0 43.2 14th 26.6 -0.2 22.8 2nd 46.0 49.2 average 93%
Mandora 36.2 +0.2 44.9 5th 25.7 +0.3 20.8 9th        
Marble Bar 39.5 -1.5 45.5 13th 25.7 -1.0 22.7 24th 330.0 89.1 v high 370%
Pardoo Station 35.7 -0.7 41.5 4th         204.6 64.8 v high 316%
Port Hedland Airport 35.5 -0.9 41.2 4th 26.0 +0.4 23.4 20th 110.0 64.2 high 171%
Roebourne 38.1 -0.6 45.9 8th 26.1 -0.1 22.5 2nd 34.1 61.8 average 55%
Roebourne Aero 37.6 -1.2 44.2 8th 25.9 -0.4 22.5 2nd 0 79.1 v low 0%
Shay Gap 38.3   44.6 10th          
Fortescue (district 05)
Barimunya 37.4   43.5 14th 24.1   20.3 20th 380.0
Barrow Island Airport 33.9 +0.6 40.8 9th 26.1 +0.1 23.2 25th 9.8 23.8 average 41%
Coondewanna 36.8   42.6 10th 22.8   18.6 12th 280.8
Learmonth Airport 39.0 +1.1 48.1 9th 23.3 +0.3 19.2 16th 41.8 32.6 high 128%
Mardie 37.7 -0.3 47.8 14th 25.8 +0.8 20.6 1st 23.0 38.3 average 60%
Onslow Airport 37.8 +1.4 48.7 8th 25.3 +0.9 21.1 1st 9.6 40.3 average 24%
Wittenoom 38.8 -0.7 45.0 14th 25.6 -0.4 21.6 27th 214.6 115.3 high 186%
West Gascoyne (district 06)
Carnarvon Airport 33.0 +1.7 40.9 18th 23.3 +0.8 20.2 3rd 9.0 12.2 high 74%
Denham 31.6 +1.0 40.8 29th 23.0 +1.0 19.3 3rd 0 7.6 lowest 0%
Emu Creek Station 42.2 +1.0 49.2 10th 24.7 +0.2 18.6 16th 100.1 48.0 high 209%
Murchison 39.5 +0.2 47.0 11th 23.4 +1.1 17.0 1st 2.7 19.1 low 14%
Shark Bay Airport 35.4 +1.5 45.3 18th 22.1 +0.6 18.9 17th 0 9.4 v low 0%
East Gascoyne (district 07)
Newman Aero 38.2 -0.9 44.3 14th 24.4 -0.5 21.3 20th 220.2 66.8 v high 330%
Paraburdoo Aero 40.2 -0.6 46.0 9th 25.7 -0.2 19.1 2nd 108.0 52.1 high 207%
Murchison (district 07A)
Meekatharra Airport 37.3 -1.0 43.7 13th 24.2 -0.2 18.8 22nd 129.0 29.8 v high 433%
Mount Magnet Aero 37.8 -0.1 45.4 12th 23.6 +0.2 18.1 2nd 47.8 27.7 high 173%
Paynes Find 37.3 0.0 46.4 12th 22.2 +1.3 16.1 2nd 43.4 19.6 high 221%
North Coast (district 08)
Carnamah 37.7 +1.6 47.0 12th 19.0 +0.5 12.5 2nd 2.4 11.7 average 21%
Dalwallinu 35.6 +0.3 44.9 12th 18.4 +0.3 12.7 2nd 3.8 23.4 average 16%
Geraldton Airport 33.1 +1.4 45.8 11th 19.2 +0.9 12.3 5th 0.6 5.7 average 7%
Kalbarri 34.8 +1.6 44.4 19th         0 4.7 lowest 0%
Morawa Airport 38.4 +1.2 46.9 11th 20.2 +0.4 13.4 2nd 7.4 22.4 average 33%
Mullewa 37.6 +0.8 47.0 11th 20.7 +1.3 13.9 2nd 1.6 12.8 average 13%
North Island 28.2 +0.8 31.4 29th 21.6 +0.3 19.4 2nd 0 2.4 v low 0%
Wongan Hills 35.3 +0.7 45.2 12th 18.5 +0.7 12.3 4th 3.2 14.2 average 23%
Central Coast (district 09)
Badgingarra Research Stn 35.1 +0.4 45.0 11th 17.4 +0.4 7.7 2nd 8.4 9.5 average 88%
Bickley 31.2 +0.6 40.7 11th 16.2 +0.9 10.8 3rd 0 17.6 lowest 0%
Champion Lakes 32.4   42.2 11th 18.8   13.7 2nd 0.2
Garden Island HSF 28.3 +1.0 41.4 11th 19.9 +1.0 14.8 3rd 0.2 10.2 low 2%
Gingin Aero 33.5 +0.4 44.5 11th 16.9 +0.4 8.4 2nd 1.0 15.1 average 7%
Gooseberry Hill 32.8 +0.2 42.7 12th 17.9 +0.6 13.0 3rd
Gosnells City 33.8 +0.7 44.0 11th 18.2 -0.4 12.0 2nd 0 11.7 lowest 0%
Jandakot Aero 32.2 +0.9 43.2 11th 17.3 +0.5 8.7 2nd 0 14.0 lowest 0%
Jurien Bay 31.0 +1.0 40.6 21st 17.6 +0.4 12.0 5th 3.6 6.8 high 53%
Karnet 31.0 +0.3 40.6 11th 15.9 +0.6 8.8 3rd 0 17.0 lowest 0%
Lancelin 31.1 +2.0 43.5 11th 18.8 +1.2 13.0 5th 4.0 8.9 high 45%
Pearce RAAF 34.5 +1.0 44.5 11th 17.4 +0.4 9.9 2nd 0 7.7 lowest 0%
Perth Airport 32.9 +1.2 43.5 11th 17.8 +0.8 9.6 2nd 0.2 9.6 low 2%
Perth Metro 32.2 +1.1 43.3 11th 19.0 +0.9 12.6 2nd 0.2 9.7 low 2%
Rottnest Island 27.4 +0.9 33.0 11th 20.0 +0.9 15.8 3rd 0 7.6 v low 0%
Swanbourne 31.6 +1.8 44.3 11th 18.9 +0.7 13.1 3rd 0 15.3 v low 0%
South Coast (district 09A)
Albany 23.8 +1.0 29.9 12th 16.7 +1.5 12.8 14th 3.2 23.8 v low 13%
Albany Airport 26.2 +1.0 39.2 12th 14.0 +0.5 8.2 14th 1.6 23.6 v low 7%
Bridgetown 30.6 +0.8 40.0 12th 12.6 -0.6 4.7 4th 2.0 14.6 average 14%
Bunbury 29.9 +0.2 40.8 11th 15.1 -0.3 7.7 3rd 0.4 11.2 low 4%
Busselton Aero 30.8 +0.7 40.2 11th 14.0 -0.3 5.5 3rd 1.2 11.4 average 11%
Cape Leeuwin 24.2 +1.2 30.3 25th 18.2 +1.2 15.7 3rd 4.6 16.1 low 29%
Cape Naturaliste 27.6 +2.2 37.5 11th 16.0 +0.8 11.1 4th 3.6 10.5 average 34%
Collie East 31.8 +1.2 40.8 12th 13.1 -0.4 5.1 3rd 1.2 16.3 low 7%
Donnybrook 32.2 +1.7 40.2 11th 15.3 +1.3 7.5 3rd 1.8 12.0 low 15%
Dwellingup 31.4 +1.8 41.0 11th 15.1 +0.9 8.6 2nd 1.2 15.5 low 8%
Esperance 26.4 +0.2 40.7 7th 16.6 +0.9 10.7 4th 6.6 27.1 average 24%
Esperance Aero 28.9 +1.3 42.0 12th 15.3 +0.4 9.5 4th 11.4 27.6 average 41%
Harvey 31.9 +0.8 41.0 11th         0 12.4 v low 0%
Hopetoun North 24.3 -1.1 40.4 7th 13.7 -1.5 7.8 4th 0.2 41.8 low 0%
Jarrahwood 31.6 +2.1 40.7 12th 12.3 -0.3 3.6 3rd 2.0 14.0 low 14%
Mandurah 30.2 +0.9 41.6 11th 19.7 +0.8 14.9 5th 0 16.2 v low 0%
Manjimup 29.4 +2.3 39.3 12th 13.4 +0.3 8.2 3rd 1.2 19.4 v low 6%
North Walpole 25.7 +1.5 35.6 12th 14.6 +0.1 9.8 4th 13.4 27.0 average 50%
Pemberton 27.8 +1.6 37.4 12th 13.8 +0.6 8.2 3rd 12.3 21.7 average 57%
Rocky Gully 29.0 +1.6 42.1 12th 12.7 0.0 6.0 3rd 1.0 16.5 v low 6%
Windy Harbour 24.1 +0.9 30.7 25th 14.8 +0.4 6.8 29th 8.5 15.7 average 54%
Witchcliffe 27.9 +1.5 37.0 12th 13.2 -0.8 6.3 3rd 3.6 11.1 low 32%
North Central (district 10)
Bencubbin 35.5 +1.0 45.0 12th 20.1 +2.0 14.2 4th 22.0 16.7 high 132%
Cunderdin Airfield 35.6 +0.9 47.1 12th 18.2 +0.9 11.6 2nd 2.8 23.0 average 12%
Kellerberrin 35.8 +1.8 47.5 12th 18.1 +1.2 12.0 4th 0.3 13.4 average 2%
Merredin 35.3 +1.4 45.6 12th 19.6 +1.8 14.0 5th 8.2 14.6 average 56%
Northam 35.1 +0.9 46.3 12th 18.6 +1.4 12.1 2nd 1.2 10.3 average 12%
York 35.4 +1.2 46.6 12th 17.0 +0.5 10.6 4th 0 27.3 v low 0%
South Central (district 10A)
Beverley 35.8 +1.6 46.4 12th 17.4 +1.1 12.0 4th 0.4 11.8 average 3%
Brookton 34.4 +1.5 45.2 12th 16.9 +1.4 10.9 3rd 0.4 12.6 low 3%
Corrigin 34.1 +1.6 45.9 12th 17.4 +1.6 12.1 4th 4.4 16.9 average 26%
Hyden 35.4 +1.8 46.0 12th 17.0 +1.5 11.0 4th 0.2 19.2 low 1%
Jacup 30.2 +2.6 45.2 12th 13.4 +0.3 6.7 4th 4.0 33.8 low 12%
Katanning 31.8 +1.9 43.6 12th 13.8 +0.1 8.0 3rd 0.4 26.5 v low 2%
Lake Grace 32.9 +1.9 45.1 12th 15.8 +0.5 10.5 4th 6.4 39.8 average 16%
Narembeen 34.7 +0.7 45.3 12th 17.8 +1.2 12.9 4th 2.4 16.3 average 15%
Narrogin 32.7 +1.7 43.7 12th 15.4 +1.2 9.8 3rd 0.2 12.8 low 2%
Newdegate Research Station 33.2 +2.3 45.9 12th 13.8 -0.1 5.4 4th 1.2 18.8 low 6%
Ongerup 30.7 +2.1 44.5 12th 14.6 +0.7 7.5 3rd 1.6 18.6 low 9%
Pingelly 33.4 +1.5 44.4 12th 16.4 +0.9 10.6 3rd 0 10.9 lowest 0%
Ravensthorpe 30.0 +1.0 44.2 12th 14.6 +0.5 8.5 4th 3.0 24.8 low 12%
Wagin 32.8 +1.8 44.0 12th 15.4 +0.8 9.3 3rd 0.2 12.7 low 2%
Wandering 33.4 +1.4 43.9 12th 14.4 +0.2 7.4 3rd 0 17.2 v low 0%
Eucla (district 11)
Balladonia 30.7 -0.7 44.6 13th 16.1 +1.4 10.0 4th 128.0 19.7 v high 650%
Eucla 27.3 +1.4 44.5 16th 17.5 +0.9 9.7 4th 87.6 15.2 v high 576%
Eyre 27.3 +0.8 43.5 27th 16.3 +1.0 5.0 6th 139.3 17.4 v high 801%
Forrest 33.4 +0.3 44.7 15th 17.3 +1.1 11.3 6th 88.2 26.3 high 335%
Red Rocks Point 25.6 +0.7 44.1 27th 18.3 0.0 10.0 4th 88.4 29.4 high 301%
South East (district 12)
Bulga Downs 36.7 -1.1 44.7 13th 22.5 +0.1 18.6 22nd 229.8 30.4 highest 756%
Kalgoorlie-Boulder Airport 32.2 -1.5 43.5 13th 18.2 -0.1 14.7 5th 177.4 26.3 v high 675%
Laverton Aero 36.6 +1.2 45.0 15th 21.7 +0.2 16.1 29th 70.4 44.0 high 160%
Leinster Aero 37.2 0.0 44.2 15th 23.6 +0.4 17.9 29th 110.2 41.5 high 266%
Leonora 36.4 -0.6 46.3 15th 22.2 +0.4 17.0 29th 172.0 25.9 highest 664%
Leonora Aero 36.1   45.3 15th 22.3   17.3 29th 173.6
Mount Keith 37.0   44.1 14th 23.9   18.0 22nd 115.6
Munglinup West 30.2 +1.7 43.8 12th 14.7 +0.2 8.9 4th 6.2 45.6 v low 14%
Norseman Aero 31.8 -0.7 41.3 13th 16.2 +0.4 10.8 4th 72.8 40.7 high 179%
Salmon Gums Res.Stn. 31.8 +1.2 42.1 12th 14.7 +0.8 4.8 4th 21.6 26.7 average 81%
Southern Cross Airfield 34.8 +0.1 45.8 12th 19.4 +1.7 13.8 5th 44.6 30.5 average 146%
North East (district 13)
Carnegie 39.4 +0.6 45.5 14th 24.9 +1.1 21.0 2nd 85.6 31.0 v high 276%
Giles Meteorological Office 36.8 -0.5 41.7 31st 23.6 0.0 19.3 8th 24.6 30.0 average 82%
Telfer Aero 39.4 -1.1 45.2 12th 25.8 -0.2 22.1 19th 173.0 52.1 highest 332%
Warburton Airfield 39.5 +1.6 44.0 30th 25.4 +2.5 21.4 18th 19.4 28.4 average 68%
Wiluna                 203.9 36.6 v high 557%
Offshore Islands (district 200)
Adele Island 31.0   33.0 7th 27.0   24.3 19th
Browse Island 29.8   31.4 6th 27.0   22.6 5th
Christmas Island Aero 28.6 +0.7 30.8 17th 22.6 -0.1 20.3 27th 233.6 299.1 average 78%
Cocos Island Airport 29.9 +0.2 30.7 31st 24.8 0.0 22.4 20th 96.2 163.4 average 59%
Varanus Island 31.8 -0.4 36.5 9th 26.3 +0.1 24.5 1st 20.6 35.9 average 57%

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 9 am on Monday 3 February 2014. 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, as they cannot then be calculated reliably.
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.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

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