Western Australia in 2016: unusually hot in the north; above average rainfall in the south and east

It was an unusually hot year over most of the northern half of Western Australia, with record high annual mean temperatures recorded in the Kimberley and east Pilbara, whilst temperatures were below average in southwest parts of the State. It was a wet year for much of southern and eastern WA, with a number of locations in the South West Land Division recording their wettest year for several decades.

Above average rainfall in the south and east; dry near the west and northwest coast

  • Parts of the Pilbara and Kimberley had a relatively dry 2015-16 wet season, but recorded unusually high rainfall in the dry season and at the start of the 2016-17 wet season; it was the fifth-wettest May to October period on record for northern WA (north of 26°S)
  • Much of the southern half of WA observed an unusually wet January and March, and though winter rainfall was generally below average, frequent rainfall events occurred; some locations in the South West Land Division had their wettest year on record, or their wettest for several decades
  • Significant rainfall events in the South West Land Division in January, March, and July brought record high daily rainfall to some sites
  • Tropical cyclone Yvette developed to the west of the Kimberley in the second half of December, the third tropical cyclone in the WA region for the calendar year following Stan in late January, and Uriah in mid-February. A tropical low that moved over the Kimberley from the northeast was followed by ex-tropical cyclone Yvette moving in from the west and both brought areas of heavy rainfall to the Kimberley in the second half of December
  • When averaged across the State, rainfall in 2016 for WA was above average and the wettest year since 2011, similarly the South West Land Division recorded an above average year and also the wettest since 2011
  • Christmas Island, about 1600 km northwest of the Australia mainland, had its wettest year on record with 5120.8 mm, during which spring was exceptionally wet. Despite a small amount of rainfall data being unavailable in 2016, this was more than 1000 mm higher than the previous record wet year in 1978

Record warm year in the north; near average in the south

  • The annual mean maximum temperature for Western Australia was 0.56 °C above average, the coolest since 2011. The year included WA's fifth-warmest autumn and ninth-warmest April on record.
  • Daytime temperatures were consistently warmer than normal in the Kimberley with several sites setting annual mean maximum temperature records
  • Wyndham Aerodrome set a new Australian record annual mean maximum temperature of 37.5 °C
  • Cooler than normal autumn, winter, and spring days in southwest WA resulted in a few sites recording their coolest year on record, and several sites having their coolest year since at least 1993
  • The annual mean minimum temperature for WA was 0.65 °C above average, the equal eighth-highest on record, largely due WA recording its fourth-warmest autumn and seventh-warmest winter on record
  • A number of sites in the Pilbara and Kimberley recorded their highest annual mean minimum temperature, including Broome Airport with 76 years of record
  • Troughton Island set a new Australian annual mean minimum temperature of 27.0 °C
  • Northern WA (north of 26°S) had its second-warmest annual mean maximum temperature on record, and its warmest annual mean minimum temperature on record
  • The South West Land Division recorded near average for minimum temperatures, however the monthly mean minimum temperature was consistently below average from May to October in response to persistent southerly winds through this period

Further information

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Extremes in 2016
Hottest day 47.8 °C at Mardie on 12 Feb
47.8 °C at Emu Creek Station on 13 Feb
Warmest days on average 37.5 °C at Wyndham Aero
Coolest days on average 19.4 °C at Shannon
Coldest day 8.8 °C at Rocky Gully on 8 Aug
Coldest night -4.5 °C at Eyre on 18 Sep
Coolest nights on average 8.1 °C at Newdegate Research Station
Warmest nights on average 27.0 °C at Troughton Island
23.9 °C at Argyle Aerodrome
23.9 °C at Wyndham Aero
Warmest night 33.4 °C at Telfer Aero on 4 Jan
Warmest on average overall 30.7 °C at Wyndham Aero
Coolest on average overall 14.6 °C at Rocky Gully
14.6 °C at Shannon
Wettest overall 1443.5 mm at Northcliffe
Driest overall 69.8 mm at Port Hedland Airport
Wettest day 225.6 mm at Broome Airport on 23 Dec
Strongest wind gust 133 km/h at Rowley Shoals on 30 Jan

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


Monthly maps
Rainfall rankMaximum temperature rankMinimum temperature rank
January Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
February Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
March Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
April Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
May Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
June Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
July Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
August Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
September Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
October Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
November Map of Rainfall deciles Map of Decile rank of mean maximum temperature Map of Decile rank of mean minimum temperature
December Map of Rainfall deciles Map of Decile rank of mean maximum 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 daily rainfall
New record
(mm)
Old
record
Years of
record
McAlinden 85.0 on 20 Jan 84.6 on 22 Jan 1982 72
One Tree Bridge (Hazelmere) 77.4 on 16 Jul 77.0 on 16 May 2005 47
Christmas Island Aero 195.8 on 13 Oct 186.2 on 12 Feb 2001 44
Wyndarra 101.2 on 19 Jan 64.6 on 22 Jan 1982 43
Jarrahwood 113.2 on 16 Jul 106.4 on 9 Apr 1985 42
Gibb Rock 69.4 on 26 Jan 51.8 on 22 Jan 2000 36
Cunderdin Airfield 65.4 on 27 Mar 64.0 on 22 Jan 2000 21



Record highest annual total rainfall
New record
(mm)
Old
record
Years of
record
Annual
average
Gairdner 758.6 615.4 in 1978 44 454.0
Jarrahwood 1306.2 1284.5 in 1996 40 934.7
Christmas Island Aero 5120.8 3715.3 in 1978 37 2183.0
Gibb Rock 525.7 512.6 in 1999 33 334.2
Warra Jarra 719.6 658.8 in 1983 30 510.5

Highest annual total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Annual
average
Cranbrook 675.5 705.7 in 1947* 501.3
Ravensthorpe 679.4 734.5 in 1951* 429.5
Maybrook 676.6 785.9 in 1955 484.2
Cherry Tree 599.4 691.8 in 1955* 459.0
Boscabel 703.0 708.4 in 1945* 521.5
Kojonup 709.6 752.5 in 1955* 533.0
Amelup 536.9 590.3 in 1955* 385.9
Wereroa 1434.8 1550.6 in 1965* 1183.6
Riverdale 640.6 714.5 in 1963* 502.9
Chillinup 610.4 651.0 in 1939* 405.7
Nannup 1150.1 1192.9 in 1965* 940.3
Wongan Hills 513.8 520.9 in 1974* 388.4
Mount Barker 917.4 934.0 in 1971* 730.5
Denmark 1176.4 1192.0 in 1976* 1088.3
Brookton 516.9 519.8 in 1984* 450.9
Shackleton 424.1 514.5 in 1963* 325.0
Kondut 406.4 426.2 in 1992* 340.6
Windy Harbour 1267.7 1333.8 in 1988* 1070.3

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




Lowest annual total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Annual
average
Port Hedland Airport 69.8 56.7 in 1972* 315.5

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




Record lowest daily maximum temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Badgingarra Research Stn 10.3 on 7 Jun = 10.3 on 1 Aug 1987 50 25.9
Jurien Bay 12.4 on 7 Jun 12.9 on 22 Sep 1985 48 24.9
Gingin Aero 12.1 on 7 Jun 12.6 on 11 Jul 2011 21 25.6



Record highest annual mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Broome Airport 33.3 = 33.3 in 1988 76 32.2
Warmun 36.7 36.6 in 1992 51 35.0
Troughton Island 32.6 32.0 in 1998 34 31.1
Derby Aero 36.3 35.7 in 2015 29 34.6
Kununurra Aero 36.7 36.4 in 1992 28 34.9
Cygnet Bay 33.7 33.5 in 2005 26 32.4
Doongan 34.3 = 34.3 in 1992 23 33.0
Argyle Aerodrome 36.1 35.9 in 1998 21 34.7

Highest annual mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Annual
average
Christmas Island Aero 28.2 28.4 in 1983* 27.3

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




Record lowest annual mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Bickley 21.7 = 21.7 in 2005 22 22.6
Rocky Gully 19.9 20.0 in 2005 20 21.0

Lowest annual mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Annual
average
Bencubbin 24.5 24.1 in 1971* 25.4
Northam 24.7 =24.7 in 1981* 25.4
Beverley 24.5 24.4 in 1992 25.4
Hyden 24.5 23.6 in 1992 25.1
Wongan Hills 24.9 24.3 in 1992 25.8
Brookton 23.6 23.5 in 1993 24.3
Narembeen 24.4 24.0 in 1992* 25.3
Wagin 22.4 22.3 in 1993 23.0
Kalbarri 26.9 26.5 in 1993* 27.8

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




Record highest daily minimum temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Onslow Airport 32.0 on 4 Mar = 32.0 on 21 Jan 2003 52 19.1
Christmas Island Aero 26.5 on 24 Apr 26.3 on 10 May 2014 45 22.9
Telfer Aero 33.4 on 4 Jan 33.2 on 23 Nov 2015 43 19.4
Cygnet Bay 32.5 on 18 Dec 30.5 on 2 Dec 2015 32 20.9
Curtin Aero 30.5 on 9 Dec 29.7 on 15 Dec 2009 26 21.0
Mount Elizabeth 27.5 on 1 Dec 26.7 on 19 Oct 1998 24 16.5



Record lowest temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Rocky Gully -0.4 on 13 Jul -0.3 on 7 Jul 2013 21 9.7



Record highest annual mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Broome Airport 23.5 23.0 in 2010 76 21.2
Port Hedland Airport 21.5 21.3 in 2010 67 19.5
Mardie 20.3 = 20.3 in 2015 56 18.8
Bidyadanga 23.0 22.4 in 2010 53 20.8
Warmun 21.9 = 21.9 in 1998 50 20.3
Christmas Island Aero 23.7 23.5 in 1998 39 22.9
Telfer Aero 21.1 21.0 in 1991 39 19.4
Troughton Island 27.0 26.5 in 2005 34 25.4
Derby Aero 23.5 22.9 in 1973 29 21.5
Karratha Aero 22.0 21.8 in 2010 22 20.8

Highest annual mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Annual
average
Mandora 20.9 21.2 in 1973* 19.4

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




Record highest annual mean temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Broome Airport 28.4 28.0 in 2010 76 26.7
Port Hedland Airport 27.9 27.7 in 2015 67 26.4
Mandora 27.9 27.8 in 1973 42 26.7
Troughton Island 29.8 29.2 in 2005 34 28.2
Derby Aero 29.9 29.0 in 1973 29 28.0
Karratha Aero 27.4 27.3 in 2010 22 26.6
Argyle Aerodrome 30.0 29.9 in 1998 21 28.4

Highest annual mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Annual
average
Kununurra Aero 29.4 29.5 in 1992 28.0

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




Record lowest annual mean temperature
New record
(°C)
Old
record
Years of
record
Annual
average
Rocky Gully 14.6 14.7 in 2005 20 15.3

Lowest annual mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Annual
average
Narrogin 15.9 15.5 in 1993* 15.9
Jacup 15.2 15.1 in 1995* 15.7

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




Summary statistics for 2016
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean
for
2016
Diff
from
average
Highest
for
2016
Mean
for
2016
Diff
from
average
Lowest
for
2016
Total
for
2016
Average
annual
total
Rank
of
2016
Fraction
of annual
average
North Kimberley (district 01)
Doongan 34.3 +1.3 41.2 5 Nov     3.5 17 Jul 1378.4 1154.8 high 119%
Kalumburu 36.0 +1.8 41.0 29 Sep 21.7 +1.4 7.8 17 Jul 1148.2 1187.5 average 97%
Troughton Island 32.6 +1.5 36.3 9 Apr 27.0 +1.6 20.6 16 Jul 530.6 808.7 low 66%
Wyndham Aero 37.5 +1.6 44.5 30 Nov 23.9 +1.7 7.4 5 Aug 764.6 844.0 average 91%
East Kimberley (district 02)
Argyle Aerodrome 36.1 +1.4 43.1 30 Oct 23.9 +1.7 11.0 17 Jul 618.6 755.7 low 82%
Halls Creek Airport 34.7 +1.1 44.9 6 Jan 21.2 +1.2 6.9 17 Jul
Kununurra Aero 36.7 +1.8 43.8 8 Dec 22.2 +1.0 7.3 5 Aug 756.8 833.2 average 91%
Warmun 36.7 +1.7 44.0 30 Nov 21.9 +1.6 6.1 5 Aug 728.7 726.4 average 100%
West Kimberley (district 03)
Bidyadanga 34.3 +1.0 44.0 25 Mar 23.0 +2.2 9.6 18 Jul 704.1 515.9 high 136%
Broome Airport 33.3 +1.1 42.6 5 Nov 23.5 +2.3 9.4 18 Jul 757.4 612.9 high 124%
Cygnet Bay 33.7 +1.3 39.5 25 Mar     11.4 19 Jul 486.7 778.1 low 63%
Derby Aero 36.3 +1.7 44.0 14 Nov 23.5 +2.0 9.3 19 Jul 634.2 690.0 average 92%
Fitzroy Crossing Aero 37.0 +1.0 45.1 5 Nov 21.4 +1.3 6.6 18 Jul 963.8 719.8 high 134%
De Grey (district 04)
Bedout Island 30.9   38.5 6 Nov 24.8   17.5 2 Aug
Karratha Aero 32.9 +0.5 46.1 11 Feb 22.0 +1.2 9.5 23 Aug 224.4 296.7 average 76%
Legendre Island 30.3   41.5 6 Nov 23.4   15.0 8 Jun
Mandora 34.9 +0.8 45.3 6 Nov 20.9 +1.5 4.1 16 Jul 327.0 375.6 average 87%
Marble Bar 36.5 +1.0 47.4 5 Jan 21.9 +1.6 7.8 17 Jul
Port Hedland Airport 34.4 +1.1 45.0 11 Feb 21.5 +2.0 10.4 25 Aug 69.8 315.5 v low 22%
Roebourne Aero 35.4 +0.6 47.0 11 Feb 20.7 +0.9 6.8 24 Aug 182.4 289.2 low 63%
Fortescue (district 05)
Barrow Island Airport 29.5 +0.3 40.6 19 Feb 22.5 +0.2 13.5 24 Aug 218.6 293.9 average 74%
Learmonth Airport 32.0 +0.1 46.0 13 Feb 17.6 -0.1 5.0 23 Aug
Mardie 33.9 0.0 47.8 12 Feb 20.3 +1.5 7.6 23 Aug 337.4 277.4 average 122%
Onslow Airport 32.6 +0.6 46.9 18 Feb 20.2 +1.1 8.9 24 Aug 237.6 315.1 average 75%
Wittenoom 33.9 +1.0 45.3 5 Jan 20.9 +1.1 7.6 17 Jul 316.6 462.5 low 68%
West Gascoyne (district 06)
Carnarvon Airport 27.5 +0.2 43.1 7 Feb 17.2 0.0 4.3 14 Jul 119.2 224.6 low 53%
Denham 26.2 -0.6 42.5 7 Feb     7.5 27 Jun 150.6 224.0 low 67%
Shark Bay Airport 28.4 -0.7 46.0 8 Feb 16.0 -0.4 4.5 14 Jul 163.4 210.7 average 78%
East Gascoyne (district 07)
Newman Aero 32.4 +0.4 44.7 4 Jan     1.8 13 Jul 238.8 327.7 low 73%
Paraburdoo Aero 33.4 -0.1 44.9 13 Feb 19.0 +0.9 5.3 10 Jul 344.2 324.5 average 106%
Murchison (district 07A)
Meekatharra Airport 29.3 +0.3 43.3 24 Dec 16.1 +0.2 1.6 13 Jul
Mount Magnet Aero 28.1 -0.5 43.7 2 Jan 15.0 -0.2 2.1 13 Jul 224.4 255.9 average 88%
North Coast (district 08)
Dalwallinu 25.2 -1.2 44.1 11 Feb 11.2 -0.6 -0.6 2 Aug
Geraldton Airport 25.7   44.5 15 Feb 13.0   1.9 13 Jul
Kalbarri 26.9 -0.9 43.5 8 Feb 14.4 -0.2 4.0 23 Aug 338.3 346.9 average 98%
Morawa Airport 27.1 -1.1 44.4 11 Feb 12.4 -0.5 0.6 1 Aug 400.6 291.7 high 137%
North Island 24.3 -0.5 36.8 29 Jan 17.9 -0.7 7.4 3 Aug 242.8 282.9 low 86%
Wongan Hills 24.9 -0.9 44.7 11 Feb 11.2 -0.8 0.0 23 Aug 513.8 388.4 v high 132%
Central Coast (district 09)
Bickley 21.7 -0.9 40.9 10 Feb 11.0 -0.3 1.5 13 Jul 1085.6 1076.8 average 101%
Garden Island HSF 21.9 -0.9 41.3 8 Feb 14.6 -0.4 6.0 13 Jul 600.2 598.2 average 100%
Gingin Aero 24.8 -0.8 44.4 10 Feb 10.8 -0.2 -1.2 13 Jul 843.2 632.5 high 133%
Gosnells City 24.7 -0.9 42.8 8 Feb     1.6 13 Jul
Jandakot Aero 24.0 -0.6 43.3 21 Dec 11.5 +0.1 -1.6 13 Jul 794.2 823.5 average 96%
Jurien Bay 24.6 -0.3 42.5 14 Mar 13.0 -0.1 3.3 24 Aug 603.8 552.9 high 109%
Lancelin 23.4 -0.8 42.0 14 Mar     2.0 13 Jul 683.1 602.1 high 113%
Pearce RAAF 25.0 -0.2 45.1 10 Feb 11.7 -0.5 0.5 13 Jul 739.4 653.0 high 113%
Perth Airport 24.4 -0.1 43.0 7 Jan 12.1 -0.1 0.9 24 Jul 673.2 766.1 low 88%
Perth Metro 24.2 -0.6 42.5 8 Feb 12.7 -0.1 0.6 13 Jul 715.8 944.9 low 85%
Rottnest Island 21.9 -0.4 40.6 8 Feb 15.3 -0.4 8.0 19 Sep 612.0 572.0 average 107%
Swanbourne 23.1 -1.1 42.8 8 Feb 13.8 -0.1 3.4 13 Jul 831.4 726.5 high 114%
South Coast (district 09A)
Albany     39.0 15 Nov 12.6 +0.9 4.8 6 Aug 903.7 929.1 average 97%
Albany Airport 20.1   38.9 8 Feb 10.3   1.0 13 Jul 975.6
Bridgetown 21.5 -1.0 39.9 8 Feb 8.5 -0.1 -2.6 24 Aug
Bunbury 22.4 -0.8 40.0 8 Feb     -1.1 13 Jul 801.8 728.3 high 110%
Busselton Aero 22.3 -0.8 39.0 8 Feb 10.2 -0.1 0.9 1 Aug 781.4 686.0 high 114%
Cape Leeuwin 19.7 -0.1 33.3 14 Nov 14.2 +0.1 6.4 29 Sep 856.0 961.6 low 89%
Cape Naturaliste 21.4 +0.7 37.6 7 Jan 12.7 0.0 5.4 21 Oct 716.6 804.6 low 89%
Collie East 22.4 -0.8 40.3 9 Feb 8.3 -0.2 -3.7 13 Jul 856.8 720.4 high 119%
Dwellingup 22.1 +0.2 40.8 10 Feb 9.8 +0.2 -1.6 13 Jul 1094.8 1232.3 low 89%
Esperance 21.5 -0.4 43.0 11 Feb 12.1 0.0 3.7 2 Jul 649.2 617.4 average 105%
Esperance Aero 22.2 0.0 43.8 11 Feb 10.9 -0.4 2.7 26 Sep 684.4 569.8 high 120%
Jarrahwood 22.4 -0.2 40.2 8 Feb 8.6 -0.1 -2.5 13 Jul 1306.2 934.7 highest 140%
Mandurah 22.7 -0.6 40.8 7 Jan 14.2 -0.6 4.5 13 Jul
Manjimup 20.7 +0.3 39.9 8 Feb 9.7 0.0 1.1 24 Aug
North Walpole 19.5 -0.8 39.4 8 Feb 11.3 -0.4 2.6 24 Aug 1286.4 1099.5 high 117%
Rocky Gully 19.9 -1.1 38.7 8 Feb 9.3 -0.4 -0.4 13 Jul 984.0 713.3 v high 138%
Shannon 19.4 -1.1 38.7 8 Feb 9.8 +0.1 0.4 24 Aug
Witchcliffe 20.9 -0.5 39.6 8 Feb 10.7 0.0 1.4 2 Jun
North Central (district 10)
Bencubbin 24.5 -0.9 43.0 11 Feb 11.5 -0.2 -0.6 1 Aug
Cunderdin Airfield 25.0 -1.0 45.9 11 Feb 10.1 -0.4 -2.3 17 Sep 410.4 302.7 high 136%
Merredin 24.7 -0.4 44.1 11 Feb 11.0 -0.4 -1.6 1 Aug 419.0 326.6 high 128%
Northam 24.7 -0.7 45.1 11 Feb 10.5 -0.4 -1.8 13 Jul 498.0 427.6 high 116%
York 24.8 -0.8 44.5 11 Feb     -2.7 13 Jul 510.7 387.0 v high 132%
South Central (district 10A)
Beverley 24.5 -0.9 44.8 11 Feb 9.9 -0.4 -2.4 13 Jul 512.3 417.7 high 123%
Brookton 23.6 -0.7 44.3 11 Feb 9.3 -0.5 -1.9 1 Aug 516.9 450.9 high 115%
Hyden 24.5 -0.6 44.2 11 Feb 9.6 -0.4 -2.7 24 Aug 418.8 340.4 high 123%
Jacup 21.5 -0.5 41.3 9 Feb 9.0 -0.3 0.9 1 Aug
Katanning 21.2 -1.4 40.6 9 Feb 9.2 -0.4 -0.7 21 Oct
Lake Grace 22.6 -1.0 43.5 11 Feb 9.8 -0.6 -1.2 1 Aug 391.4 341.6 average 115%
Narembeen 24.4 -0.9 43.9 11 Feb     -1.5 1 Aug
Narrogin 22.3 -0.1 42.5 11 Feb 9.4 0.0 -2.2 13 Jul 465.1 492.5 average 94%
Newdegate Research Station 22.7 -0.8 44.3 11 Feb 8.1 -0.7 -2.6 21 Oct 476.0 371.7 high 128%
Ravensthorpe 22.0 -0.8 40.0 11 Feb     1.0 24 Aug 679.4 429.5 v high 158%
Wagin 22.4 -0.6 41.4 9 Feb     -1.9 13 Jul 456.0 432.1 average 106%
Wandering 22.7 -1.1 42.8 10 Feb 8.3 -0.2 -3.8 13 Jul
Eucla (district 11)
Eucla 23.3 +0.6 43.9 12 Jan 12.2 0.0 1.3 13 Aug 337.4 273.9 high 123%
Eyre 24.0 +1.1 44.0 16 Nov 9.8 -0.9 -4.5 18 Sep 382.9 315.1 high 122%
Forrest 25.7 -0.6 44.5 12 Jan 10.8 -0.2 -0.7 14 Jul 250.4 225.1 average 111%
Red Rocks Point 22.6 +0.2 43.4 12 Dec 12.8 -0.4 2.5 14 Jul 358.0 356.8 average 100%
South East (district 12)
Bulga Downs 27.7 -1.2 44.1 11 Dec 13.0 -0.7 -1.5 3 Aug 332.6 236.3 high 141%
Kalgoorlie-Boulder Airport 24.9 -0.4 41.6 6 Nov 11.9 +0.2 -1.2 23 Jul
Leinster Aero 27.8 -0.4 43.5 3 Jan 14.5 -0.2 0.0 13 Jul 283.4 260.3 average 109%
Leonora Aero 27.2   43.7 3 Jan 14.0   0.1 14 Jul 282.0
Munglinup West 22.5 -0.8 40.5 28 Feb 10.0 -0.7 1.3 24 Sep 654.8 467.1 v high 140%
Norseman Aero 24.4 -0.7 42.5 11 Feb 9.4 -0.6 -2.9 1 Aug 260.4 302.7 average 86%
Salmon Gums Res.Stn. 23.4 -0.1 43.2 11 Feb 8.8 -0.3 -3.1 2 Jul 375.8 355.1 average 106%
Southern Cross Airfield 24.9 -1.0 42.4 11 Feb 10.3 -0.1 -2.9 23 Jul 314.6 306.0 average 103%
Yeelirrie     44.3 3 Jan 12.9 +0.1 -2.7 3 Aug 224.3 240.5 average 93%
North East (district 13)
Carnegie 30.4 -0.1 44.4 1 Jan     0.1 16 Jul 251.3 236.9 average 106%
Giles Meteorological Office 29.4 0.0 42.8 13 Feb 15.6 -0.3 0.8 14 Jul 519.0 291.7 high 178%
Telfer Aero 35.0 +0.9 46.5 6 Jan 21.1 +1.7 5.5 17 Jul 191.6 363.0 low 53%
Warburton Airfield 29.6 -0.3 43.4 1 Mar 15.8 +0.9 0.9 15 Sep 328.8 246.0 high 134%
Offshore Islands (district 200)
Browse Island 30.7   34.5 7 Dec     22.7 6 Sep
Christmas Island Aero 28.2 +0.9 30.7 26 Jan 23.7 +0.8 20.4 29 Dec 5120.8 2183.0 highest 235%
Cocos Island Airport 29.6 +0.5 32.1 15 Apr 25.4 +0.8 22.2 25 Aug
Rowley Shoals 28.9   34.2 23 Apr     19.5 16 Aug
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 Annual climate summary, generally published on the second working day of the year, 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 9 am on Tuesday 3 January 2017. 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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

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