Western Australia in January 2016: Wet and warm nights in southwest; TC Stan crosses Pilbara coast

For Western Australia, the mean maximum temperature in January 2016 was near average whilst the mean minimum temperature for the State was above average. Rainfall in January was near average for WA as a whole, though the South West Land Division recorded its sixth-wettest January on record.

  • Near average mean maximum temperature for WA
  • Above average mean minimum temperature for WA; 8th-highest for SWLD
  • Near average rainfall for WA; 6th-wettest for SWLD
  • Devastating Waroona/Yarloop bushfire in early January
  • Heavy rainfall and flooding in southwest WA from the 18th to 20th
  • Tropical cyclone Stan crossed the east Pilbara coast on the 31st

Above to very much above average rainfall was reported over large parts of the WA in January 2016, with areas of below average rainfall confined to the north and west Kimberley, and small areas in the Pilbara and northwest Gascoyne. Very much above average rainfall was reported in much of the South West Land Division (SWLD) and many sites, particularly in the South West district, recorded their wettest January on record, while many more witnessed their wettest January for at least 20 years. For WA as a whole, rainfall in January 2016  was 15% above average, whilst for the SWLD it was the wettest January in ten years and the sixth-wettest> since comparable records commenced in 1900.

A complex low with embedded thunderstorms moved through southwest WA between the 18th and 20th and produced moderate to heavy rainfall, including record high daily rainfall at a number of locations. Rainfall totals over this period were in the 100 mm to 150 mm range in southern parts of the SWLD, with unofficial reports over 200 mm, leading to localised flooding in some areas.

A tropical low developed into tropical cyclone Stan north-northwest of Port Hedland on the 29th. Stan moved southeast towards the east Pilbara coast, intensified into a category two system, and made landfall east of Pardoo in the early morning on the 31st. Stan weakened to a tropical low while moving through the east Pilbara and rapidly moved through the southeast of the State on 1 February. Heavy rainfall associated with tropical cyclone Stan was observed in the Gascoyne River, Fortescue River and De Grey River catchments, and resulted in moderate to major flooding in the upper areas of the De Grey River catchments including the Oakover River, the Coongan River and the Nullagine River.

Mean maximum temperatures in January 2016 were below to very much below average across large parts of WA, with Kalbarri in the Central West recording its lowest January mean maximum temperature on record, and sites in the west Pilbara and west Gascoyne recording some of their lowest January mean maxima on record. Above to very much above average mean maximum temperatures were recorded in the north and west Kimberley, and in parts of the Lower West and South West, and in the Eucla. For the State as a whole, the mean maximum temperature was near average. Days were very hot in large parts of WA in the first week of the month. Telfer Aerodrome in the east Pilbara recorded four consecutive days of 46 °C or above between the 3rd and 6th, which equalled the all-time record at the site, equalling four consecutive days of 46 °C or above from 20 to 23 December 1990. Halls Creek and Mount Elizabeth in the Kimberley registered their highest January temperature on record on the 6th, whilst many sites in the SWLD recorded temperatures in the low-40s on the 7th. Unusually low daytime temperatures were reported in the southwest with the passage of cloudbands and embedded showers and thunderstorms from the 18th to 21st, and on the 31st, with daily maxima in the mid-to-high teens. Mullewa in the Central West and Windy Harbour in the South West recorded their lowest January maximum temperatures on record as a result.

Mean minimum temperatures in January 2016 were above to very much above average for much of southern, inland and northern WA. Several sites in the South West Land Division, as well as a few in the Kimberley, recorded their highest January mean minimum temperature on record. Only western parts of the Pilbara and inland parts of the Gascoyne saw below average mean minimum temperatures. When averaged across the State, the mean minimum temperature was above average, whilst the mean minimum temperature for the SWLD was the eighth-highest for January since comparable records commenced in 1910.

Lightning ignited a bushfire in early January which impacted on the Waroona area and resulted in more than 69,000 hectares of land burnt and over 180 properties (mostly in Yarloop) lost.

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Extremes in January 2016
Hottest day 47.4 °C at Marble Bar on the 5th
Warmest days on average 41.0 °C at Marble Bar
Coolest days on average 22.7 °C at Albany
Coldest day 15.7 °C at Shannon on the 31st
Coldest night 5.7 °C at Salmon Gums Res.Stn. on the 14th
Coolest nights on average 14.7 °C at Jacup
Warmest nights on average 27.4 °C at Wyndham Aero
Warmest night 33.4 °C at Telfer Aero on the 4th
Warmest on average overall 33.7 °C at Marble Bar
Coolest on average overall 20.2 °C at Albany
20.2 °C at North Walpole
Wettest overall 262.4 mm at Mount House Airstrip
Wettest day 98.0 mm at Weelarranna on the 25th
Strongest wind gust 133 km/h at Rowley Shoals on the 30th

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

Click on a map to show it full size in a pop-up window


Record highest January daily rainfall
New record
(mm)
Old
record
Years of
record
Nannup 90.0 on the 19th 55.6 on the 7th in 1976 111
Pemberton 73.2 on the 19th 60.4 on the 7th in 1976 75
Badgingarra Research Stn 48.2 on the 19th 44.6 on the 29th in 1990 53
Frankland 40.0 on the 20th 33.0 on the 6th in 2011 40
Paynedale 51.5 on the 20th 47.8 on the 22nd in 1982 37
Gibb Rock 69.4 on the 26th 51.8 on the 22nd in 2000 35
Yourdamung Lake 32.4 on the 20th 28.2 on the 15th in 2000 22
Rocky Gully 36.6 on the 20th 33.0 on the 15th in 2000 21
Ludlow 34.2 on the 20th 31.8 on the 6th in 2011 20
Narrikup West 22.0 on the 20th 18.4 on the 7th in 2013 20



Record highest January total rainfall
New record
(mm)
Old
record
Years of
record
Average for
January
Greenbushes 149.4 121.6 in 1982 123 16.1
Cape Naturaliste 62.2 58.6 in 2011 112 10.9
Manjimup 93.2 92.2 in 1976 100 20.1
Balingup 133.6 119.5 in 1982 87 13.9
Cowaramup 92.8 63.2 in 2000 76 14.4
Pemberton 105.0 95.8 in 1989 75 22.6
Muresk Institute 89.0 65.9 in 1952 66 11.4
Chapman Hill 95.6 67.4 in 1976 58 10.0
Jarrahwood 148.6 86.2 in 2011 41 17.0
Perivale Orchard 106.2 89.6 in 1982 39 15.3
Gibb Rock 137.2 135.0 in 2000 35 24.8
Paynedale 86.3 80.3 in 1982 35 11.0
Windy Harbour 94.6 67.6 in 2011 30 17.9
Rocky Gully 107.6 80.4 in 2011 21 20.6
Narrikup West 74.8 73.0 in 2011 20 22.6

Highest January total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
January
Woolgorong 71.9 79.8 in 1915* 15.9
Nannup 113.4 135.0 in 1939 14.9
Northcliffe 112.8 130.5 in 1939 24.4
Margaret River 68.3 79.0 in 1954* 15.5
Warner Glen 98.8 105.2 in 1954* 17.3
Wilgarrup 106.3 114.3 in 1957* 17.2
Frankland 99.7 107.7 in 1939* 15.3
Amelup 99.1 198.0 in 1982 15.5
Borden 118.8 194.4 in 1982 19.0
Broomehill 82.8 236.0 in 1982 15.0
Cape Riche 102.6 240.9 in 1982 22.4
Cranbrook 114.0 189.0 in 1982 16.4
Donnybrook 102.0 133.8 in 1982 12.7
Gnowangerup 154.8 205.9 in 1982 19.1
Kendenup 142.2 187.6 in 1982 18.4
Mount Barker 105.4 181.9 in 1982 23.7
Tamar 88.0 152.2 in 1982 24.9
Twolganup 101.0 221.3 in 1982 18.5
White Gums 94.0 187.6 in 1982 17.7
Windrush 91.8 153.4 in 1982 24.8
Cherry Tree 84.8 229.4 in 1982* 15.9
Collie 85.6 242.6 in 1982* 15.6
Kojonup 113.8 228.4 in 1982* 14.6
Boscabel 135.8 271.4 in 1982* 16.4
Chamingup 91.2 256.0 in 1982* 16.4
Duranillin 186.5 295.6 in 1982* 15.8
Denbarker 104.8 129.8 in 1982* 26.3
Nabawa 21.2 54.6 in 1990 6.8
Nalyerlup 110.2 117.3 in 1990 23.3
Nindethana Farm 57.4 97.8 in 1990 14.7
Nyerilup 102.4 116.6 in 1990 18.4
Eradu 42.8 54.4 in 1990* 9.3
Gairdner 135.1 137.4 in 1990* 28.1

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


Lowest January total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
January
Udialla 54.0 45.5 in 1979* 204.5

* 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
New record
(°C)
Old
record
Years of
record
Average for
January
Halls Creek Airport 44.9 on the 6th 44.0 on the 9th in 1971 71 36.7
Christmas Island Aero 30.7 on the 26th 30.6 on the 4th in 1995 43 27.9
Mount Elizabeth 40.0 on the 6th 39.4 on the 1st in 2010 23 33.0



Record lowest January daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Mullewa 21.2 on the 18th 22.9 on the 1st in 1960 71 36.9
Windy Harbour 17.5 on the 31st 18.0 on the 20th in 2010 27 23.3



Record highest January mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Christmas Island Aero 29.5 29.3 in 1983 42 27.9
Troughton Island 33.4 33.2 in 1970 36 31.8

Highest January mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
January
Cocos Island Airport 31.0 31.1 in 1958 29.7



Record lowest January mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Kalbarri 29.9 30.3 in 1975 40 33.3



Record highest January daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Cocos Island Airport 27.6 on the 13th = 27.6 on the 16th in 1980 64 24.9
Jurien Bay 27.2 on the 29th 27.0 on the 26th in 2012 47 17.2
Christmas Island Aero 26.1 on the 15th 25.4 on the 1st in 1973 43 22.7
Telfer Aero 33.4 on the 4th 32.5 on the 11th in 2008 42 26.0



Record highest January mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Albany 17.7 17.3 in 2013 98 15.2
Narrogin 16.6 = 16.6 in 2012 92 14.2
Manjimup 15.3 15.0 in 2012 76 13.1
Cocos Island Airport 26.0 25.8 in 1999 63 24.9
Ongerup 15.9 15.6 in 2013 49 13.9
Christmas Island Aero 24.5 23.2 in 2013 42 22.7
Wagin 16.4 16.3 in 2013 42 14.6
Jarrahwood 15.9 15.8 in 2012 33 12.6
Derby Aero 26.8 = 26.8 in 2005 30 25.7
Kununurra Aero 26.0 25.9 in 2003 29 25.0
Jacup 14.7 14.3 in 2012 22 13.1
Mount Elizabeth 23.2 22.9 in 2013 21 22.1
Rocky Gully 14.9 14.1 in 2012 20 12.7

Highest January mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
January
Argyle Aerodrome 27.1 27.4 in 1996 25.7
Curtin Aero 25.6 25.8 in 1996 25.0



Record highest January mean temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Cocos Island Airport 28.5 28.3 in 2004 63 27.3
Christmas Island Aero 27.0 26.2 in 1983 42 25.3
Troughton Island 30.4 30.3 in 2002 36 29.1

Highest January mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
January
Kununurra Aero 31.7 31.9 in 1996 30.5



Record lowest January mean temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Learmonth Airport 28.4 28.6 in 2006 40 30.5



Summary statistics for January 2016
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
January
2016
Diff
from
average
Highest for
January
2016
Mean for
January
2016
Diff
from
average
Lowest for
January
2016
Total for
January
2016
Average
for
January
Rank of
January
2016
Fraction of
January
average
North Kimberley (district 01)
Doongan 34.4 +1.2 38.9 3rd 23.2 +0.4 21.6 19th 180.6 294.1 low 61%
Kalumburu 35.2 +1.4 38.0 14th 24.9 +0.3 21.7 7th 160.8 303.2 v low 53%
Mount Elizabeth 33.9 +0.9 40.0 6th 23.2 +1.1 20.9 17th 198.0 252.1 average 79%
Troughton Island 33.4 +1.6 35.1 16th 27.3 +0.9 23.3 7th 111.4 262.2 low 42%
Wyndham Aero 38.6 +2.2 41.1 5th 27.4 +1.2 22.8 7th 62.2 188.0 low 33%
East Kimberley (district 02)
Argyle Aerodrome 38.0 +1.6 41.7 5th 27.1 +1.4 23.5 19th 157.0 158.4 average 99%
Halls Creek Airport 37.1 +0.4 44.9 6th 24.9 +0.6 21.8 19th 173.2 155.4 average 111%
Kununurra Aero 37.4 +1.5 40.3 6th 26.0 +1.0 22.1 7th 77.4 201.0 low 39%
Warmun 38.5 +1.3 43.0 6th 25.8 +1.0 23.6 29th 86.4 178.9 low 48%
West Kimberley (district 03)
Bidyadanga 34.6 +0.2 40.9 8th 26.5 +0.5 23.8 9th 119.0 127.6 average 93%
Broome Airport 34.4 +1.1 40.5 8th 27.2 +0.9 23.9 24th 136.0 181.0 average 75%
Curtin Aero 38.1 +1.7 43.9 6th 25.6 +0.6 23.4 9th 164.8 221.8 low 74%
Cygnet Bay 35.1 +1.5 38.0 14th 26.6 +1.1 24.5 11th 37.0 238.3 low 16%
Derby Aero 37.7 +2.5 41.3 14th 26.8 +1.1 23.8 26th 55.0 196.7 low 28%
Fitzroy Crossing Aero 38.4 +0.8 44.8 6th 25.9 +0.7 23.0 29th 224.8 176.6 average 127%
De Grey (district 04)
Bedout Island 32.2   36.2 15th 26.0   25.0 2nd
Karratha Aero 35.4 -0.6 40.8 13th 25.9 -0.9 22.9 20th 12.2 47.2 average 26%
Legendre Island 31.7   35.4 13th 25.0   23.6 4th
Mandora 35.2 -0.8 43.9 8th 25.6 +0.2 23.3 22nd 82.6 83.8 average 99%
Marble Bar 41.0 +0.1 47.4 5th 26.4 -0.2 22.8 21st 2.6 81.2 v low 3%
Port Hedland Airport 35.8 -0.6 41.0 15th 25.4 -0.2 21.9 21st 12.0 63.5 average 19%
Roebourne Aero 38.5 -0.2 43.9 7th 25.6 -0.7 23.1 20th 38.2 76.5 average 50%
Fortescue (district 05)
Barrow Island Airport 31.1 -2.2 37.1 16th 24.2 -1.8 22.2 20th 11.0 22.0 average 50%
Learmonth Airport 35.1 -2.9 40.8 16th 21.6 -1.4 17.2 19th 0.6 31.6 average 2%
Mardie 35.8 -2.1 41.5 14th 24.4 -0.6 20.4 20th 70.6 38.4 high 184%
Onslow Airport 34.2 -2.2 38.8 27th 23.7 -0.7 20.8 20th 6.2 38.9 average 16%
Wittenoom 38.5 -1.0 45.3 5th 25.8 -0.2 21.4 17th 82.2 114.0 average 72%
West Gascoyne (district 06)
Carnarvon Airport 29.5 -1.8 37.9 16th 22.7 +0.1 19.7 14th 0.6 11.9 average 5%
Denham 30.4 -0.3 40.0 14th 22.8 +0.7 20.0 1st 5.6 7.5 high 75%
Emu Creek Station 38.0 -3.2 42.2 7th 22.5 -2.0 17.2 19th 17.1 47.1 average 36%
Murchison 36.3 -3.1 42.5 5th 22.4 -0.1 14.0 19th 34.5 20.2 high 171%
Shark Bay Airport 31.8 -2.3 41.0 16th 21.1 -0.5 18.2 1st 6.2 8.7 average 71%
East Gascoyne (district 07)
Paraburdoo Aero 38.6 -2.2 43.7 6th 24.8 -1.1 21.3 20th 163.4 54.6 v high 299%
Murchison (district 07A)
Meekatharra Airport 36.9 -1.4 42.5 1st 23.8 -0.6 18.0 19th 11.0 29.5 average 37%
Mount Magnet Aero 36.2 -1.8 43.7 2nd 23.3 -0.2 15.0 19th 32.0 27.7 average 116%
Paynes Find 35.4 -2.0 42.4 7th 21.2 +0.2 13.4 19th 47.2 19.8 high 238%
North Coast (district 08)
Dalwallinu 33.8 -1.6 41.7 7th 19.4 +1.3 12.4 19th 10.4 22.1 average 47%
Geraldton Airport 31.2   44.1 1st 20.1   15.7 11th 19.4
Kalbarri 29.9 -3.4 41.7 28th 19.9 +0.3 16.5 10th 16.4 4.9 high 335%
Morawa Airport 34.6 -2.8 42.3 7th 20.7 +0.9 13.9 19th 72.8 24.0 v high 303%
Mullewa 34.8 -2.1 42.7 1st 20.1 +0.6 13.7 13th 24.9 12.9 high 193%
North Island 28.4 +0.8 36.8 29th 21.4 0.0 17.7 19th 10.8 2.8 high 386%
Wongan Hills 33.6 -1.0 41.8 7th 18.9 +1.0 12.5 19th 90.6 14.7 v high 616%
Central Coast (district 09)
Badgingarra Research Stn 33.1 -1.6 42.1 7th 18.1 +1.0 11.8 19th 54.0 10.2 v high 529%
Bickley 29.7 -1.0 39.9 7th 16.5 +1.1 11.6 13th 44.6 17.9 high 249%
Garden Island HSF 29.4 +2.0 39.2 7th 20.0 +1.0 15.6 13th 26.2 10.5 high 250%
Gingin Aero 33.2 0.0 42.8 7th 18.3 +1.8 11.7 20th 30.4 15.1 high 201%
Gosnells City 32.5 -0.7 42.8 7th 20.1 +1.5 14.9 14th        
Jandakot Aero 32.0 +0.6 42.4 7th 18.7 +1.9 13.9 20th 28.2 14.2 high 199%
Jurien Bay 30.0 0.0 42.5 29th 19.4 +2.2 13.4 20th 16.2 6.7 v high 242%
Karnet 30.5 -0.2 39.1 7th 16.8 +1.5 11.9 13th        
Lancelin 28.6 -0.6 39.1 29th 19.0 +1.4 13.3 19th 32.9 9.2 v high 358%
Pearce RAAF 33.9 +0.4 42.2 7th 19.0 +2.0 13.7 20th 20.2 8.9 high 227%
Perth Airport 32.4 +0.7 43.0 7th 19.0 +2.0 12.8 19th 22.6 9.6 high 235%
Perth Metro 32.0 +0.8 41.9 7th 19.3 +1.2 13.9 19th 15.2 9.7 high 157%
Rottnest Island 28.0 +1.5 38.2 8th 19.8 +0.7 15.6 20th 25.8 12.1 high 213%
Swanbourne 30.9 +1.0 39.8 7th 19.7 +1.5 14.1 19th 15.2 14.7 high 103%
South Coast (district 09A)
Albany 22.7 -0.1 27.1 16th 17.7 +2.5 15.2 22nd 73.8 24.1 v high 306%
Albany Airport 24.7   37.3 16th 16.3   11.7 23rd 80.4
Bridgetown 30.0 +0.1 38.3 9th 15.6 +2.5 7.9 13th 87.0 17.8 high 489%
Bunbury 31.0 +1.2 38.7 7th 17.9 +2.5 10.8 13th 51.0 12.5 v high 408%
Busselton Aero 30.5 +0.3 38.8 7th 16.3 +2.1 7.9 13th 64.4 13.6 v high 474%
Cape Leeuwin 23.1 0.0 29.0 9th 17.9 +0.9 15.4 31st 61.6 16.4 v high 376%
Cape Naturaliste 28.2 +2.8 37.6 7th 16.9 +1.7 12.4 13th 62.2 10.9 highest 571%
Collie East 30.5 -0.3 36.8 6th 15.8 +2.4 7.6 13th 90.4 20.6 v high 439%
Dwellingup 30.6 +0.9 40.1 7th 16.4 +2.1 11.5 22nd 44.8 15.6 v high 287%
Esperance 26.1 -0.1 35.9 17th 16.8 +1.1 12.8 30th 47.6 27.1 high 176%
Esperance Aero 28.6 +0.9 39.1 17th 16.0 +1.1 12.7 15th 44.6 27.6 high 162%
Hopetoun North 23.2 -2.2 30.4 16th 14.6 -0.7 9.4 15th 52.6 40.5 average 130%
Jarrahwood 30.6 +1.0 37.2 6th 15.9 +3.3 7.3 13th 148.6 17.0 highest 874%
Mandurah 30.6 +1.1 40.8 7th 20.2 +1.3 15.4 13th 32.4 16.2 high 200%
Manjimup 28.5 +1.3 38.0 7th 15.3 +2.2 9.3 14th 93.2 20.1 highest 464%
North Walpole 24.9 +0.5 34.7 16th 15.9 +1.3 11.9 14th 89.6 30.3 high 296%
Rocky Gully 27.2 -0.3 37.0 16th 14.9 +2.2 9.0 13th 107.6 20.6 highest 522%
Shannon 26.5 -0.1 36.0 7th 15.4 +2.7 11.1 13th
Witchcliffe 27.7 +1.2 37.7 7th 15.5 +1.6 10.1 14th 22.2 11.1 high 200%
North Central (district 10)
Bencubbin 33.5 -1.1 40.0 7th 19.4 +1.2 13.5 19th 40.1 16.8 high 239%
Cunderdin Airfield 33.9 -1.0 40.5 7th 18.5 +1.2 12.8 19th 50.4 23.2 high 217%
Merredin 33.0 -0.9 39.0 3rd 19.3 +1.5 13.5 14th 41.0 14.8 v high 277%
Northam 33.3 -0.9 40.7 7th 18.3 +1.1 12.3 19th 74.2 10.7 v high 693%
York 33.1 -1.2 41.0 7th     15.8 28th 75.8 28.4 high 267%
South Central (district 10A)
Beverley 32.9 -1.4 40.2 7th 17.4 +1.0 12.4 13th 79.2 12.3 v high 644%
Brookton 31.5 -1.5 39.5 7th 17.4 +1.9 12.5 13th 71.0 13.1 v high 542%
Hyden 32.8 -0.9 39.9 9th 17.3 +1.7 12.5 14th 82.4 19.8 v high 416%
Jacup 27.2 -0.6 37.8 9th 14.7 +1.6 9.6 13th 81.6 34.6 high 236%
Katanning 29.0 -1.1 37.4 9th 15.7 +2.0 11.0 13th
Lake Grace 30.3 -0.9 37.9 9th 16.7 +1.3 12.5 14th 54.6 38.6 high 141%
Narembeen 32.5 -1.5 39.5 5th 18.1 +1.5 13.1 14th 0 16.0 lowest 0%
Narrogin 30.6 -0.4 37.2 7th 16.6 +2.4 11.4 13th 43.0 13.0 v high 331%
Newdegate Research Station 30.8 -0.3 38.8 9th 15.1 +1.2 9.3 13th 77.0 19.4 v high 397%
Ongerup 28.0 -0.7 37.6 9th 15.9 +2.0 10.8 13th 108.6 19.3 v high 563%
Pingelly 31.1 -0.8 38.4 5th 17.0 +1.4 11.4 23rd 44.2 11.1 v high 398%
Ravensthorpe 27.9 -1.1 37.4 9th       63.2 25.0 v high 253%
Wagin 30.4 -0.7 37.6 9th 16.4 +1.8 11.4 13th 48.4 12.9 v high 375%
Wandering 31.1 -1.1 39.1 7th 16.5 +2.3 11.4 13th 45.6 17.9 high 255%
Eucla (district 11)
Balladonia 30.3 -1.0 39.5 11th 16.9 +2.2 11.9 30th 70.6 20.1 v high 351%
Eucla 28.8 +2.9 43.9 12th 18.4 +1.8 13.7 24th 7.8 15.2 average 51%
Eyre 28.3 +1.8 39.0 31st 15.1 -0.2 7.4 9th 5.0 17.2 average 29%
Forrest 33.0 -0.2 44.5 12th 17.8 +1.5 12.0 8th 8.8 24.3 average 36%
Red Rocks Point 25.6 +0.7 32.9 19th 19.0 +0.8 14.6 24th 4.0 25.7 low 16%
South East (district 12)
Bulga Downs 36.2 -1.6 43.3 3rd 21.3 -1.2 14.9 20th 76.0 30.5 high 249%
Kalgoorlie-Boulder Airport 32.7 -1.0 39.3 17th 19.0 +0.7 13.8 14th 108.4 26.9 v high 403%
Laverton Aero 34.7 -0.9 42.2 3rd 21.1 -0.4 16.2 14th 69.0 43.3 average 159%
Leinster Aero 35.7 -1.6 43.5 3rd 22.5 -0.8 17.1 20th 73.6 41.1 high 179%
Leonora Aero 35.3   43.7 3rd 21.8   17.7 20th 38.6
Munglinup West 29.1 +0.3 38.2 9th 15.3 +0.8 11.5 13th 87.0 45.5 high 191%
Norseman Aero 31.3 -1.2 39.8 11th 16.6 +0.8 10.2 14th 50.0 38.9 average 129%
Salmon Gums Res.Stn. 30.8 +0.2 38.3 17th 15.2 +1.3 5.7 14th 38.6 26.5 high 146%
Southern Cross Airfield 33.2 -1.6 40.0 3rd 18.8 +1.0 13.5 14th 63.6 30.6 high 208%
Yeelirrie 36.6 -1.3 44.3 3rd 22.3 0.0 16.3 20th 28.4 29.6 average 96%
North East (district 13)
Carnegie 37.8 -1.1 44.4 1st 25.1 +1.2 19.4 18th 27.7 30.9 average 90%
Giles Meteorological Office 36.0 -1.3 41.8 6th 23.0 -0.6 18.7 15th 84.6 30.6 v high 276%
Telfer Aero 40.0 -0.4 46.5 6th 26.6 +0.6 21.8 16th 66.8 53.2 high 126%
Warburton Airfield 36.6 -1.4 42.5 5th 24.4 +1.4 19.1 14th 56.2 28.6 high 197%
Offshore Islands (district 200)
Browse Island 31.0   33.3 20th     24.3 29th
Christmas Island Aero 29.5 +1.6 30.7 26th 24.5 +1.8 22.6 23rd 249.2 295.7 average 84%
Cocos Island Airport 31.0 +1.3 31.8 27th 26.0 +1.1 22.9 18th 199.4 163.1 average 122%
Rowley Shoals 29.4   31.7 26th 27.0   24.4 29th
Note: Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225).
Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992.

Notes

The Monthly climate summary lists 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.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 11 am on Monday 1 February 2016. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages for individual sites 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.

Observations for “Perth Metro” are taken from the current site at Mount Lawley (Bureau number 009225).
Comparisons are made against combined data from the current site (which opened in early 1993) and the previous site at Perth Regional Office (009034), which ran from 1876 to early 1992.

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 used for temperature area averages.

Further information

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Service notice

Network problems on 8 January disrupted processing of observations, affecting some climate information. Missing data are being retrieved and will be processed into our systems over coming weeks.