Western Australia in November 2013: warm and dry month for southwest WA

  • Rainfall: above average for WA; below average for southwest WA
  • Maximum temperature: above average for WA; 8th warmest on record for southwest WA
  • Minimum temperature: 8th warmest for WA;  2nd warmest on record for southwest WA

Rainfall

Rainfall in November 2013 was below to very much below average over most of the Southwest Land Division (SWLD) and western Gascoyne. Conversely, much of the Kimberley, Northern and Southern Interior, parts of the inland Gascoyne, southeast Goldfields, northeast Southeast Coastal, and Eucla received above to very much above average rainfall. Cygnet Bay and Sophie Downs in the Kimberley both recorded their wettest November on record.

The Kimberley saw regular thunderstorm activity during November, with the highest daily fall in WA occurring at Emma Gorge in the 24 hours to 0900 WST on the 22nd with 120.0 mm recorded. The passage of tropical cyclone Alessia near the north Kimberley coast on the 23rd and 24th also brought some heavy falls to the region, and Cygnet Bay recorded its highest daily fall in November in 50 years of recording with 41.0 mm on the 23rd. A cloudband that developed over the southern Goldfields and adjacent parts of neighbouring districts on the morning of the 27th brought heavy rainfall to the region. The Norseman aerodrome weather station reported 74.4 mm between 0400 WST and 1400 WST on the 27th, including 29.4 mm between 0821 WST and 0921 WST, which was a 1 in 50 to 1 in 100 year event. The cloudband moved slowly eastward and Balladonia recorded 47.2 mm in the 24 hours to 0900 WST on the 28th, its highest November daily fall in 89 years of record.

Averaged across WA as a whole, rainfall in November 2013 was above average, however the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay) and the Southwest Land Division (SWLD) saw below average rainfall.

Maximum temperature

Very much above average mean maximum temperatures were observed over western and central WA, as well as parts of the west Kimberley, with up to 4 °C warmer than normal maxima observed in the Southern Interior, northern Goldfields, south Gascoyne, Central West, Lower West, and Central Wheat Belt.  Several sites in these regions recorded their warmest November on record. Much of northern and southeast WA observed near average or below average November maximum temperatures.

Averaged across the state as a whole, the mean maximum temperature for WA in November 2013 was above average. This continues WA's run of above average mean monthly maxima since April 2012, with only June 2013 being below the average, and as a result WA has recorded its warmest January to November period on record in 2013. For the Lower Southwest, the mean maximum temperature in November 2013 ranked eighth warmest for November since comparable records commenced in 1910, and led to the January to November period being equal third warmest on record.

Minimum temperatures

Most of western and southern WA saw above to very much above average mean minimum temperatures in November 2013, with areas of the Central West, south Gascoyne, and Central Wheat Belt 3 °C to 4 °C warmer than normal. A number of sites in the Gascoyne, Goldfields, and SWLD recorded their highest mean minimum temperature for November on record.

Averaged across the state as a whole, the mean minimum temperature for WA in November 2013 was eighth warmest on record, whilst averaged across the Lower Southwest (southwest of a line from Jurien Bay to Bremer Bay), the mean minimum temperature ranked second warmest on record. Persistent warmer than normal mean minimum temperatures for WA since September 2012 have led to the State recording its second warmest January to November period since comparable records commenced in 1901, only behind 1998. The Lower Southwest has similarly recorded its second warmest January to November period, with nine of the eleven months this year being above the average. Only 2011 saw a greater mean minimum in the Lower Southwest.

Other Phenomena

Tropical cyclone Alessia was the first tropical cyclone for the season in the Australian region. A tropical low developed south of Java on the 20th and moved to the southeast and intensified into a category one tropical cyclone in the evening of the 22nd off the west Kimberley coast. Alessia tracked eastward near the north Kimberley coast on the 23rd and 24th before weakening below tropical cyclone intensity on the evening of the 24th as it crossed the western Top End of the Northern Territory. The impacts of Alessia were generally minor with some heavy rainfall and a wind gust to 94 km/h reported at Troughton Island at 0011 WST on the 24th.

 

Further information

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Extremes in November 2013
Hottest day 46.4 °C at Roebourne on the 5th
Warmest days on average 40.5 °C at Fitzroy Crossing Aero
Coolest days on average 20.7 °C at Albany
Coldest day 14.2 °C at Mount Barker on the 6th
Coldest night -0.9 °C at Eyre on the 11th
Coolest nights on average 11.0 °C at Jacup
Warmest nights on average 27.7 °C at Browse Island
27.7 °C at Troughton Island
27.0 °C at Wyndham
Warmest night 31.8 °C at Argyle Aerodrome on the 17th
Wettest overall 195.2 mm at Margaret Gorge
Wettest day 120.0 mm at Emma Gorge on the 22nd
Highest wind gust 98 km/h at Curtin Aero on the 6th

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 November daily rainfall

Highest daily rainfall
in November 2013 (mm)
Previous wettest
for November
Years of
record
Balladonia 47.2 on the 28th 45.0 on the 30th in 1982 89
Cygnet Bay 41.0 on the 23rd 40.2 on the 8th in 1975 50



Record highest total November rainfall

Total rainfall
for November 2013 (mm)
Previous wettest
for November
Years of
record
Average for
November
Cygnet Bay 57.6 42.9 in 1975 49 6.0
Sophie Downs 151.4 135.0 in 2011 30 47.5

Highest total November rainfall for at least 30 years

Total rainfall
for November 2013 (mm)
Most recent November
at least this wet
Years since
wetter
Average for
November
Mount Barnett 184.0 267.1 in 1914* 42 82.9
Yalleen 27.0 45.0 in 1983 30 7.4

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




Record highest November mean daily maximum temperature

Mean daily maximum
temperature
for November 2013 (°C)
Previous warmest
for November
Years of
record
Average for
November
Meekatharra Airport 36.3 36.2 in 1969 63 33.2
Cocos Island Airport 29.9 = 29.9 in 1968 61 29.0
Pearce RAAF 30.6 30.4 in 2010 52 27.1
Beverley 31.5 31.3 in 2010 43 28.4
Yeelirrie 36.1 35.6 in 1990 38 32.9



Record highest November mean daily minimum temperature

Mean daily minimum
temperature
for November 2013 (°C)
Previous warmest
for November
Years of
record
Average for
November
Northam 15.1 14.6 in 1914 109 12.4
Donnybrook 13.7 13.3 in 2006 108 10.4
Albany 14.8 = 14.8 in 2006 96 12.4
Perth Airport 15.1 14.7 in 1994 69 12.7
Carnarvon Airport 20.5 20.1 in 1982 67 18.6
Bencubbin 16.3 16.1 in 1982 62 13.1
Pearce RAAF 15.1 14.4 in 1982 53 12.5
Merredin 15.5 = 15.5 in 1982 47 13.1
Brookton 13.4 13.3 in 2006 46 11.0
Beverley 14.0 13.9 in 2006 44 11.5
Narembeen 14.7 14.6 in 1982 44 12.2
Yeelirrie 18.9 18.7 in 1982 38 16.2
Paynes Find 18.8 18.6 in 2007 34 15.2
Jarrahwood 12.2 12.0 in 2006 32 9.5




Record highest November mean temperature

Mean daily
temperature
for November 2013 (°C)
Previous warmest
for November
Years of
record
Average for
November
Perth Metro 22.5 = 22.5 in 2010 116 20.3
Wiluna 28.5 = 28.5 in 1938 109 25.9
Donnybrook 20.6 20.5 in 2010 108 17.6
Dwellingup 19.9 = 19.9 in 2010 75 17.0
Carnamah 24.7 = 24.7 in 2010 71 21.7
Perth Airport 22.3 = 22.3 in 2010 69 19.3
Meekatharra Airport 28.7 = 28.7 in 1957 63 25.9
Bencubbin 24.0 = 24.0 in 1982 61 21.0
Pearce RAAF 22.9 22.3 in 2010 52 19.8
Merredin 23.4 = 23.4 in 2010 47 20.8
Brookton 21.6 21.5 in 2006 46 19.2
Wongan Hills 23.8 23.7 in 2010 45 21.0
Beverley 22.7 22.2 in 2006 43 20.0
Yeelirrie 27.5 26.9 in 2006 38 24.6
Jarrahwood 19.0 18.8 in 2010 32 16.6



Summary statistics for November 2013

Maximum temperatures
for November
(°C)
Minimum temperatures
for November
(°C)
Rainfall
for November
(millimetres)
Mean for
November
2013
Diff
from
average
Highest for
November
2013
Mean for
November
2013
Diff
from
average
Lowest for
November
2013
Total for
November
2013
Average
for
November
Rank of
November
2013
Fraction of
November
average
North Kimberley (district 01)
Doongan 35.8 -0.8 39.0 3rd    

41.3 112.3 v low 37%
Kalumburu 35.8 -1.3 38.6 1st 24.0 -0.7 21.1 11th 124.4 83.1 high 150%
Troughton Island 33.1 +0.1 34.5 19th 27.7 +0.3 23.3 24th 29.0 10.3 high 282%
Truscott 34.0   36.5 17th 25.9   23.7 6th 37.6 29.9 average 126%
Wyndham 38.9 -0.5 42.5 3rd 27.0 -0.1 22.6 10th 130.2 56.4 v high 231%
Wyndham Aero 39.6 -0.2 43.2 3rd 26.3 -0.3 22.3 10th 114.4 56.8 v high 201%
East Kimberley (district 02)
Argyle Aerodrome 38.6 -0.1 42.3 7th 26.6 +0.5 21.9 13th 58.4 58.7 average 99%
Halls Creek Airport 37.0 -1.3 41.4 8th 24.7 +0.3 19.5 19th 121.4 38.6 v high 315%
Kununurra Aero 39.4 +0.5 42.4 3rd 24.8 -0.4 19.5 2nd 45.4 60.8 average 75%
Warmun 39.0 -0.3 42.4 7th 26.0 +1.1 20.0 3rd 94.4 60.6 high 156%
West Kimberley (district 03)
Bidyadanga 35.7 +0.8 44.7 4th 25.0 +1.1 20.0 4th 8.6 7.8 high 110%
Broome Airport 33.8 +0.2 42.8 3rd 25.6 +0.5 20.5 15th 37.2 9.2 v high 404%
Curtin Aero 38.7 -1.1 43.4 11th 23.2 -0.9 19.2 30th 22.6 23.3 average 97%
Derby Aero 37.8 -0.3 43.3 2nd 24.8 -0.7 21.2 12th 10.0 12.8 average 78%
Fitzroy Crossing Aero 40.5 -0.2 44.6 3rd 25.2 -0.2 20.9 3rd 33.4 30.3 average 110%
West Roebuck 35.4 -0.9 44.1 3rd 23.8 +0.1 21.7 12th 40.0 12.1 v high 331%
De Grey (district 04)
Bedout Island 32.7   38.1 4th 25.9   24.3 30th



Karratha Aero 34.9 0.0 44.8 5th 23.5 +0.5 20.4 21st 0 1.5 lowest 0%
Legendre Island 32.2   43.0 5th 24.7   23.0 21st



Mandora 35.9 -0.7 44.3 4th 22.7 +1.0 17.3 12th 0 6.5 lowest 0%
Marble Bar 40.1 -0.3 45.6 5th 23.3 -0.5 20.3 12th 14.0 8.9 high 157%
Pardoo Station 35.1 -1.5 45.0 3rd 22.9 +0.8 19.5 13th 0 3.2 lowest 0%
Port Hedland Airport 35.6 -0.6 43.8 4th 22.9 +1.6 19.7 14th 0 2.6 lowest 0%
Roebourne 38.1 +0.1 46.4 5th 22.9 +0.3 19.5 21st 0 1.5 lowest 0%
Roebourne Aero 38.1 -0.5 45.7 5th 22.2 -0.1 18.9 21st 0 3.4 v low 0%
Fortescue (district 05)
Barrow Island Airport 30.8 +0.4 35.0 2nd 23.6 +0.8 21.5 21st 0 1.9 v low 0%
Christmas Creek 38.3   42.4 5th 22.4   18.5 18th 9.2


Fortescue Dave Forrest 38.2   42.7 5th 22.0   18.2 18th 6.6


Learmonth Airport 35.4 +0.9 40.1 16th 19.4 +1.0 16.4 28th 0 1.9 lowest 0%
Mardie 35.6 -0.8 45.6 5th 21.7 +1.7 19.3 21st 0 1.5 lowest 0%
Onslow Airport 34.3 0.0 44.1 5th 21.5 +1.5 19.3 24th 0 2.9 lowest 0%
Wittenoom 39.2 +1.2 43.6 5th 23.5 -0.1 18.3 22nd 2.0 9.3 average 22%
West Gascoyne (district 06)
Carnarvon Airport 29.2 +1.6 41.9 9th 20.5 +1.9 17.5 15th 0 4.1 lowest 0%
Emu Creek Station 38.3 +1.5 43.5 9th 20.3 +1.0 17.9 22nd 0 3.8 lowest 0%
Murchison 36.3 +2.2 42.0 3rd     10.8 25th 4.0 6.0 average 67%
Shark Bay Airport 30.8 +0.5 42.9 10th 19.0 +1.5 16.5 18th 0 1.6 v low 0%
East Gascoyne (district 07)
Newman Aero 38.3 +1.0 42.9 5th 22.0 +1.2 16.4 18th 7.4 12.2 average 61%
Paraburdoo Aero 39.3 +1.1 42.3 6th 23.3 +2.0 19.5 19th 0.8 7.9 average 10%
Murchison (district 07A)
Meekatharra Airport 36.3 +3.1 41.3 2nd 21.1 +2.4 16.5 20th 13.0 11.6 high 112%
Mount Magnet Aero 35.4 +3.1 41.3 1st 19.8 +2.1 15.1 20th 14.8 11.1 average 133%
Paynes Find 34.6 +3.0 40.3 13th 18.8 +3.6 13.1 20th 0.4 10.8 low 4%
North Coast (district 08)
Carnamah 33.7 +3.6 40.2 16th 16.0 +2.7 11.0 25th 2.0 10.6 average 19%
Dalwallinu 32.5 +2.3 38.2 16th 15.2 +2.4 10.9 25th 11.4 9.1 average 125%
Geraldton Airport 29.7   40.7 3rd 15.8   12.2 8th 0


Kalbarri 29.2 +1.0 39.7 10th 16.8 +1.9 13.3 24th 0 6.9 lowest 0%
Mullewa 33.9 +2.9 41.2 3rd 17.3 +3.0 13.3 26th 0 8.8 lowest 0%
Wongan Hills 31.7 +2.7 37.9 16th 15.7 +2.7 10.5 19th 1.6 12.3 low 13%
Central Coast (district 09)
Badgingarra Research Stn 30.8 +2.5 37.6 10th 14.0 +1.8 6.6 25th 3.2 19.9 low 16%
Bickley 27.1 +2.4 34.8 16th 13.1 +1.3 8.4 19th 18.0 43.3 low 42%
Champion Lakes 28.3   36.1 16th 16.1   11.6 25th 11.4


Garden Island HSF 26.2 +2.5 36.0 10th 17.0 +1.4 12.6 19th 8.8 23.9 v low 37%
Gingin Aero 30.1 +2.3 38.2 16th 14.3 +2.4 6.8 26th 0.2 20.6 v low 1%
Gosnells City 30.2 +2.9 38.1 16th 15.9 +1.6 12.0 19th 10.4 29.3 low 35%
Jandakot Aero 28.9 +2.8 37.0 10th 14.9 +2.4 8.5 25th 9.4 29.4 low 32%
Jurien Bay 28.3 +2.5 39.0 3rd 15.1 +1.6 10.5 8th 1.0 18.7 v low 5%
Karnet 26.9 +2.5 35.2 16th 13.3 +1.9 7.2 25th 22.8 47.5 low 48%
Lancelin 27.5 +2.7 37.6 10th 15.8 +1.7 12.0 7th 0 20.9 lowest 0%
Medina Research Centre 29.0 +3.1 38.1 10th 15.0 +1.7 11.1 25th 1.6 31.6 lowest 5%
Pearce RAAF 30.6 +3.5 38.8 16th 15.1 +2.6 9.9 26th 7.6 23.7 low 32%
Perth Airport 29.5 +3.7 37.2 16th 15.1 +2.4 9.2 25th 6.0 26.6 low 23%
Perth Metro 29.1 +2.7 37.2 10th 15.9 +1.7 12.1 19th 10.2 23.8 low 43%
Rottnest Island 25.3 +2.3 35.7 10th 17.2 +1.4 12.8 19th 5.8 19.7 low 29%
Swanbourne 28.4 +3.2 37.2 10th 16.0 +1.4 11.7 19th 1.6 24.5 v low 7%
South Coast (district 09A)
Albany 20.7 +0.3 30.3 29th 14.8 +2.4 10.7 9th 44.8 45.2 average 99%
Albany Airport 22.2   30.5 29th 12.7   6.7 26th 31.8


Bridgetown 24.8 +0.7 33.8 16th 11.7 +2.4 5.9 8th 39.6 33.9 average 117%
Bunbury 26.8 +2.5 34.3 10th 14.1 +2.0 8.5 19th 16.6 26.1 low 64%
Busselton Aero 26.3 +1.5 33.6 16th 12.8 +2.2 7.3 19th 36.4 26.0 average 140%
Cape Leeuwin 21.6 +1.5 30.0 10th 15.4 +1.2 12.7 20th 27.6 37.2 average 74%
Cape Naturaliste 24.8 +3.4 32.7 16th 13.7 +1.2 8.6 19th 20.0 26.2 average 76%
Collie East 26.8 +1.7 34.5 16th 11.7 +1.9 6.0 8th 12.2 33.1 low 37%
Donnybrook 27.6 +2.8 35.6 16th 13.7 +3.3 9.6 25th 40.0 33.8 average 118%
Dwellingup 27.1 +3.5 35.2 16th 12.6 +2.2 7.7 25th 24.4 47.1 low 52%
Esperance 23.7 +0.6 37.1 17th 13.4 +0.7 8.8 9th 17.6 34.2 low 51%
Esperance Aero 24.7 +0.6 35.8 17th 12.2 +0.3 7.9 8th 16.2 36.7 low 44%
Harvey 27.4 +2.4 35.5 16th 13.4 +1.6 9.5 25th 16.6 38.5 v low 43%
Hopetoun North 23.5 +0.2 38.0 17th 12.9 +0.7 7.7 8th 11.0 37.8 low 29%
Jarrahwood 25.8 +2.2 34.0 16th 12.2 +2.7 4.8 19th 65.6 44.7 high 147%
Mandurah 26.8 +2.3 34.2 10th 16.8 +1.3 12.3 19th 11.6 26.6 low 44%
Manjimup 24.4 +2.5 33.7 16th 11.6 +1.5 7.4 8th 41.0 46.9 average 87%
North Walpole 22.1   31.2 28th 12.6   8.0 26th 54.4 64.6 average 84%
Pemberton 23.7 +2.4 32.8 16th 12.4 +2.1 8.2 26th 48.5 61.6 average 79%
Rocky Gully 24.1 +1.0 33.6 16th 11.2 +1.4 6.5 20th 33.2 40.8 average 81%
Windy Harbour 22.4 +1.6 31.9 10th 13.0 +1.2 6.8 20th 50.5 43.7 average 116%
Witchcliffe 25.0 +2.3 34.4 16th 11.6 +0.8 6.6 8th 33.2 37.6 average 88%
North Central (district 10)
Bencubbin 31.7 +2.7 38.5 17th 16.3 +3.2 11.4 19th 3.0 13.5 low 22%
Cunderdin Airfield 31.9 +2.0 38.7 4th 14.7 +2.6 10.6 19th 0.2 15.3 v low 1%
Merredin 31.4 +2.9 38.8 4th 15.5 +2.4 8.0 19th 6.2 14.6 average 42%
Northam 31.1 +2.6 38.5 16th 15.1 +2.7 10.1 25th 0.2 12.4 v low 2%
York 31.0 +1.9 38.8 16th 12.7 +1.7 7.8 25th 2.0 16.3 low 12%
South Central (district 10A)
Beverley 31.5 +3.1 39.0 16th 14.0 +2.5 9.2 25th 2.8 15.2 low 18%
Brookton 29.8 +2.4 37.2 16th 13.4 +2.4 8.2 19th 1.9 14.8 low 13%
Corrigin 29.5 +2.5 36.6 4th 13.8 +2.5 8.9 8th 2.9 16.5 low 18%
Hyden 30.2 +1.8 38.2 4th 13.7 +2.2 9.0 20th 4.4 18.8 low 23%
Jacup 25.5 +0.9 37.7 4th 11.0 +1.1 5.5 8th 2.0 30.9 v low 6%
Katanning 27.0 +1.0 34.5 4th 11.6 +1.7 5.0 8th 3.2 25.4 v low 13%
Lake Grace 28.0 +1.1 36.3 4th 13.6 +1.8 7.9 20th 3.6 24.2 low 15%
Narembeen 30.3 +1.8 37.3 4th 14.7 +2.5 9.8 20th 10.4 16.5 average 63%
Narrogin 27.9 +2.4 35.4 16th 12.5 +2.4 7.6 8th 10.4 18.3 average 57%
Newdegate Research Station 28.4 +1.3 37.0 4th 11.3 +1.3 4.2 8th 5.8 21.7 low 27%
Ongerup 25.9 +1.6 35.7 4th 11.9 +1.4 5.8 8th 7.6 25.5 low 30%
Pingelly 28.8 +2.6 35.9 16th 13.3 +2.0 8.8 19th 4.0 15.4 low 26%
Ravensthorpe 25.5 +0.5 36.3 4th 12.5 +1.5 6.0 8th 16.5 30.2 average 55%
Wagin 28.0 +2.4 35.9 16th 12.7 +2.1 7.2 8th 4.4 18.1 low 24%
Wandering 28.4 +1.2 36.8 16th 11.2 +1.8 5.3 25th 16.6 20.2 average 82%
Eucla (district 11)
Balladonia 26.7 -1.2 40.0 5th 11.9 +0.6 5.7 9th 60.9 22.8 v high 267%
Eucla 24.0 -0.3 40.7 5th 14.4 +1.0 10.0 12th 30.2 18.3 high 165%
Eyre 24.6 +0.3 39.0 5th 11.5 -0.5 -0.9 11th 18.9 20.4 average 93%
Forrest 29.9 0.0 44.0 30th 12.9 -0.1 7.4 11th 19.8 21.7 average 91%
South East (district 12)
Bulga Downs 35.2 +2.6 41.8 1st 18.8 +1.9 13.6 20th 3.2 10.8 average 30%
Kalgoorlie-Boulder Airport 29.6 +0.6 39.3 5th 15.0 +0.9 9.6 19th 25.2 18.1 high 139%
Laverton Aero 33.6 +2.7 41.0 1st 18.2 +1.3 12.2 20th 7.4 20.2 low 37%
Leinster Aero 35.1 +2.8 40.1 1st 19.8 +1.8 14.1 20th 1.2 17.5 low 7%
Leonora 34.2 +2.0 41.6 1st 18.4 +1.4 12.4 19th 8.2 12.5 average 66%
Leonora Aero 34.0   41.0 1st 18.8   12.3 19th 6.0


Munglinup West 26.0 +0.1 36.7 4th 12.1 +0.8 7.2 8th 18.4 30.5 low 60%
Norseman Aero 27.4 -1.3 36.1 24th 13.0 +0.9 8.6 8th 79.0 29.0 high 272%
Salmon Gums Res.Stn. 27.1 +0.8 37.0 4th 11.6 +1.5 2.0 8th 29.6 26.2 average 113%
Southern Cross Airfield 30.9 +1.0 38.0 4th 16.0 +3.1 10.7 20th 2.6 17.6 low 15%
Yeelirrie 36.1 +3.2 40.6 2nd 18.9 +2.7 12.5 9th 9.2 10.1 average 91%
North East (district 13)
Balgo Hills 38.7 +0.1 43.5 8th 24.8 +0.6 18.6 19th 75.4 24.2 v high 312%
Carnegie 37.4 +2.0 43.0 5th    

8.2 12.9 average 64%
Giles Meteorological Office 35.1 +0.8 41.0 7th 20.4 +0.5 14.8 13th 52.4 27.9 high 188%
Telfer Aero 38.9 -0.5 44.4 4th 23.7 +0.3 21.1 30th 1.0 16.2 low 6%
Warburton Airfield 36.7 +2.4 42.3 5th 20.5 +2.0 14.6 9th 41.6 25.0 high 166%
Wiluna 36.5 +2.5 42.7 6th 20.5 +2.7 14.8 20th 7.1 11.1 average 64%
Offshore Islands (district 200)
Adele Island 31.1   32.3 15th 27.0   23.0 24th



Browse Island 30.8   32.8 14th 27.7   24.2 23rd



Christmas Island Aero 27.7 +0.4 28.7 4th 22.7 -0.1 20.3 23rd 241.6 149.0 high 162%
Cocos Island Airport 29.9 +0.9 30.7 26th 25.3 +0.9 22.7 1st 9.2 100.6 low 9%
Varanus Island 30.0 -0.1 33.5 9th 24.2 +0.8 22.1 28th 0.2 0.8 average 25%

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 3 pm on Sunday 1 December 2013. 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.

Further information

Media
(03) 9669 4057
Enquiries