Western Australia in winter 2019: very warm days; a dry winter

Daytime temperatures were above average across almost all of Western Australia, and days were very much warmer than the winter average along the west coast, and across the west Kimberley, east Pilbara and Interior districts. It was the second-warmest winter for the Sate as a whole. Rainfall was below average for much of WA.

Below average rainfall for much of WA

  • Rainfall was below average for WA as a whole, largely due to a very dry July
  • Cold fronts produced persistent rains to the South West Land Division (SWLD) in early winter between 7 and 13 June; the wettest winter's day was on the 7th with falls over 80 mm along the southwest coast, and Kalbarri in the Central West had its wettest winter day on record
  • A cold front and associated cloudband produced widespread 30-60 mm rainfall in the SWLD on 5 July; 51.4 mm at Arena in inland Central West was its wettest winter day on record
  • A trio of cold fronts brought widespread moderate to locally heavy falls (up to 70-80 mm) to the SWLD at the end of winter and start of spring
  • Some sites in the Central West district had their wettest winter for at least 20 years

Above average daytime temperatures

  • The mean maximum temperature was 1.64 °C above average for WA, which was the second-warmest winter on record (the record was +2.02 °C in winter 2017)
  • The mean minimum temperature was 0.20 °C above average for WA
  • Broome Airport's mean maximum temperature was 31.2 °C in winter 2019, which was its equal second-warmest winter on record and warmest winter since 1988
  • Many sites near the west coast,especially around Perth had their highest winter temperature on record on the 27th or 28th, covering places from Carnavon Airport down to the southwest corner at Cape Leeuwin, as a result of warm northeastern winds
  • Geraldton Airport recorded 32.0 °C on 28 August, which was the highest winter temperature on record with records commenced in 1941; previous record was 31.7 °C on 10 August 2014 at the current Geraldton Airport

Further information

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Extremes in winter 2019
Hottest day 37.9 °C at Kalumburu on 19 August
Warmest days on average 33.4 °C at Kalumburu
Coolest days on average 15.7 °C at Shannon
Coldest day 10.0 °C at Munglinup West on 17 August
Coldest night -6.2 °C at Eyre on 20 June
Coolest nights on average 3.6 °C at Norseman Aero
Warmest nights on average 22.4 °C at Troughton Island
Warmest night 24.8 °C at Troughton Island on 15 June
Warmest on average overall 25.6 °C at Troughton Island
Coolest on average overall 10.5 °C at Newdegate Research Station
Wettest overall 681.0 mm at Bickley
Driest overall 0 mm at several locations
Wettest day 86.4 mm at Aston Downs on 7 June
Strongest wind gust 115 km/h at Cape Leeuwin on 27 June

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

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


Record highest winter daily rainfall

New record
(mm)
Old
record
Years of
record
Kalbarri 60.0 on 7 Jun 59.7 on 2 Jul 1972 49
Arena 51.4 on 5 Jul 42.0 on 9 Jul 2010 40
Tjukayirla 22.0 on 16 Aug =22.0 on 1 Jun 2004 21



Highest winter total rainfall for at least 20 years

Observed
(mm)
Most recent
higher
Average for
winter
Lancelin 413.2 418.2 in 1992* 331.0
Noongaar 162.8 186.4 in 1996 132.1
York 243.4 292.2 in 1996* 189.4
Arena 266.4 344.7 in 1996* 211.7
Highfields 195.9 264.8 in 1996* 170.3
Coolangatta 182.3 208.2 in 1998* 162.9
Eradu 213.4 217.2 in 1998* 199.1

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



Record highest winter temperature

New record
(°C)
Old
record
Years of
record
Average for
winter
Cape Leeuwin 25.5 on 28 Aug 24.7 on 6 Aug 2014 113 16.8
Perth Airport 29.9 on 28 Aug 28.3 on 26 Aug 1998 76 18.5
Carnarvon Airport 33.6 on 27 Aug = 33.6 on 12 Aug 2014 73 23.0
Dwellingup 27.1 on 28 Aug 24.9 on 20 Aug 2018 62 15.6
Karnet 27.0 on 28 Aug 25.3 on 5 Jun 1975 54 15.9
Badgingarra Research Stn 29.9 on 28 Aug 27.7 on 12 Aug 1976 53 18.2
Brookton 26.8 on 28 Aug 26.7 on 29 Aug 2006 52 16.7
Lancelin 31.0 on 28 Aug 29.4 on 5 Jun 1975 52 19.6
Jurien Bay 30.0 on 28 Aug 28.2 on 10 Aug 2014 50 20.1
Pingelly 26.4 on 28 Aug 26.1 on 29 Aug 2006 49 16.0
Goomalling 29.7 on 28 Aug 29.5 on 29 Aug 2006 44 18.0
Denham 31.5 on 27 Aug = 31.5 on 13 Aug 2014 32 22.4
Jandakot Aero 29.4 on 28 Aug 27.0 on 15 Aug 2015 30 18.6
Bickley 26.6 on 28 Aug 24.7 on 25 Aug 1994 26 15.7
Perth Metro 30.0 on 28 Aug 27.2 on 26 Aug 1998 26 19.0
Swanbourne 30.2 on 28 Aug 28.0 on 15 Aug 2015 26 18.9
Gingin Aero 30.0 on 28 Aug 28.4 on 12 Jun 2000 24 19.0
York 28.5 on 28 Aug 27.5 on 29 Aug 2006 24 17.9



Record highest winter mean daily maximum temperature

New record
(°C)
Old
record
Years of
record
Average for
winter
Manjimup 16.3 = 16.3 in 2015 78 14.9

Highest winter mean daily maximum temperature for at least 20 years

Observed
(°C)
Most recent
higher
Average for
winter
Broome Airport 31.2 31.3 in 1988 29.5



Record highest winter daily minimum temperature

New record
(°C)
Old
record
Years of
record
Average for
winter
Balladonia 15.8 on 30 Aug = 15.8 on 23 Jul 1970 55 5.3
Gascoyne Junction 22.2 on 30 Aug 19.4 on 2 Jul 1991 45 9.9



Record highest winter mean temperature

New record
(°C)
Old
record
Years of
record
Average for
winter
Newman Aero 16.6 = 16.6 in 2013 22 15.6



Summary statistics for winter 2019

Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
winter
2019
Diff
from
average
Highest for
winter
2019
Mean for
winter
2019
Diff
from
average
Lowest for
winter
2019
Total for
winter
2019
Average
for
winter
Rank of
winter
2019
Fraction of
winter
average
North Kimberley (district 01)
Doongan 30.8 +0.6 34.9 25 Aug 11.3 -0.2 5.3 25 Jun 0 5.9 lowest 0%
Kalumburu 33.4 +0.9 37.9 19 Aug 14.3 0.0 6.5 25 Jun 0 4.2 lowest 0%
Troughton Island 28.7 -0.1 31.3 19 Aug 22.4 -0.4 19.8 6 Jun 0.8 9.4 average 9%
Truscott 31.1 +0.2 36.1 19 Aug 18.7 -0.1 13.1 25 Jun 0.6 5.2 average 12%
Wyndham Aero 32.8 +0.3 36.4 14 Jun 15.3 -0.5 8.6 15 Aug 0 5.8 lowest 0%
East Kimberley (district 02)
Argyle Aerodrome 31.0 +0.5 35.6 13 Jun 17.0 +0.6 12.0 25 Jun 0 5.5 lowest 0%
Halls Creek Airport 29.0   34.1 11 Jun 12.4   6.2 15 Aug 0.4


Kununurra Aero 31.7 +0.4 36.1 12 Jun 13.9 -1.5 7.6 15 Aug 0 4.7 lowest 0%
Warmun 30.7 +0.3 36.0 14 Jun 14.7 +1.0 8.0 15 Aug 0 11.9 lowest 0%
West Kimberley (district 03)
Broome Airport 31.2 +1.7 36.1 25 Aug 14.4 -0.2 8.5 16 Jul 1.4 27.2 low 5%
Curtin Aero 32.6 +0.9 36.3 29 Jul 15.7 -0.2 9.4 7 Jul 0 17.5 lowest 0%
Cygnet Bay 29.7 +0.9 33.5 28 Aug 15.7 +0.3 10.8 24 Aug 0 31.2 lowest 0%
Derby Aero 32.3 +0.9 35.6 25 Aug 14.8 -0.6 10.1 8 Jun 0 17.1 lowest 0%
Fitzroy Crossing Aero 32.2 +0.6 36.3 26 Aug 13.2 +0.4 8.1 4 Jun 0 16.0 lowest 0%
De Grey (district 04)
Bedout Island 25.9 +0.2 28.6 29 Aug 20.3 +0.1 17.3 12 Jun



Karratha Aero 27.7 +0.7 32.0 31 Jul 15.0 +0.6 8.0 12 Jun 24.4 52.8 average 46%
Mandora 31.3 +1.7 35.9 29 Jul 13.0 -0.3 7.2 4 Aug 0 28.1 lowest 0%
Marble Bar 29.2 +1.0 35.7 28 Aug 12.5 -0.3 7.2 7 Jun 2.8 38.8 low 7%
Port Hedland Airport 29.3 +1.3 33.7 28 Jul 13.4 +0.1 8.5 16 Jul 6.8 38.7 low 18%
Roebourne Aero 29.2 +0.5 34.6 30 Aug 12.9 +0.1 6.3 12 Jun 0 42.0 v low 0%
Fortescue (district 05)
Barrow Island Airport 24.5 +0.1 28.6 29 Aug 17.9 -0.1 13.6 10 Aug 41.0 53.9 average 76%
Karijini North 26.8   33.1 29 Aug 13.1   6.0 9 Aug 19.4


Learmonth Airport 25.7 +0.5 29.4 12 Jul 12.0 -0.2 6.4 11 Aug 94.6 76.9 average 123%
Mardie 29.4 +0.9 32.9 31 Aug 13.6 +0.8 6.6 12 Jun 24.4 58.2 average 42%
Onslow Airport 27.2 +0.9 31.7 31 Aug 14.5 +0.9 10.0 18 Jul 72.2 74.8 average 97%
Thevenard Island 25.5 0.0 28.9 10 Jul 17.9 +0.1 12.8 2 Jul 71.6 59.7 average 120%
Wittenoom 26.9 +1.6 33.3 29 Aug 13.4 +0.9 7.3 13 Jun 16.4 50.8 low 32%
West Gascoyne (district 06)
Carnarvon Airport 24.4 +1.4 33.6 27 Aug 11.4 -0.2 6.0 20 Aug 104.4 106.5 average 98%
Denham 22.9 +0.5 31.5 27 Aug 13.3 0.0 12.5 30 Jun 103.8 115.8 average 90%
Murchison 22.8 +0.9 30.6 28 Aug 6.8 -0.2 2.0 21 Aug 67.3 76.6 average 88%
Shark Bay Airport 24.1 +0.5 32.2 27 Aug 10.9 -0.2 6.0 19 Jul 67.8 95.2 low 71%
East Gascoyne (district 07)
Newman Aero 25.0 +1.0 32.3 29 Aug 8.3 +1.1 0.1 30 Jun 21.4 36.5 average 59%
Paraburdoo Aero 26.9 +1.1 34.1 29 Aug 11.6 +1.0 3.3 12 Jun 7.6 47.1 v low 16%
Murchison (district 07A)
Meekatharra Airport 21.9 +1.7 30.2 28 Aug 9.2 +0.9 3.0 29 Jun 40.2 61.3 average 66%
Mount Magnet Aero 20.6 +0.6 30.7 28 Aug 8.0 +0.2 1.6 30 Jun 58.6 66.3 average 88%
Paynes Find 20.3 +1.0 31.1 28 Aug 5.6 -0.4 0.2 8 Aug 93.1 102.1 average 91%
North Coast (district 08)
Dalwallinu 18.7 +0.8 29.9 28 Aug 5.9 -0.5 0.6 16 Aug 147.4 123.0 average 120%
Geraldton Airport 21.8   32.0 28 Aug 9.6   4.1 25 Aug 235.2


Kalbarri 23.5 +1.1 31.5 27 Aug 10.6 +0.4 2.5 30 Jun 189.9 194.9 average 97%
Morawa Airport 20.5 +0.8 31.6 28 Aug 6.6 -0.1 0.9 16 Aug 155.2 120.2 high 129%
Mullewa 21.1 +1.4 31.3 28 Aug 8.0 +0.4 2.2 16 Aug 139.9 164.7 average 85%
North Island 21.9 +0.2 25.6 28 Aug 16.0 +0.3 8.0 12 Aug 194.2 165.4 average 117%
Wongan Hills 18.7 +0.9 29.8 28 Aug 6.9 -0.1 1.8 24 Aug 199.0 191.1 average 104%
Central Coast (district 09)
Badgingarra Research Stn 19.1 +0.9 29.9 28 Aug 8.1 +0.5 3.3 18 Aug 243.8 288.5 average 85%
Bickley 16.2 +0.5 26.6 28 Aug 7.8 +0.2 3.5 18 Jun 681.0 591.2 high 115%
Garden Island HSF 18.9 +0.6 25.9 28 Aug 11.6 +0.1 7.1 18 Jun 389.0 322.1 high 121%
Gingin Aero 19.8 +0.8 30.0 28 Aug 6.8 +0.1 -0.3 18 Jun 398.6 349.1 high 114%
Jandakot Aero 19.4 +0.8 29.4 28 Aug 7.9 +0.7 1.3 24 Aug 469.6 455.3 average 103%
Jurien Bay 21.2 +1.1 30.0 28 Aug 9.6 -0.1 2.6 22 Aug 290.0 302.6 average 96%
Lancelin 20.9 +1.3 31.0 28 Aug 9.7 -0.5 4.0 28 Jun 413.2 331.0 high 125%
Millendon (Swan Valley) 19.5   28.5 28 Aug 8.1   1.8 19 Jun 382.0


Pearce RAAF 19.7 +1.3 29.0 28 Aug 8.9 +0.3 2.8 18 Aug 387.4 370.1 average 105%
Perth Airport 19.7 +1.2 29.9 28 Aug 8.4 0.0 1.9 18 Aug 381.6 429.9 average 89%
Perth Metro 19.8 +0.8 30.0 28 Aug 8.5 +0.3 2.1 19 Jun 434.8 397.8 average 109%
Rottnest Island 18.7 +0.6 24.1 12 Aug 12.9 +0.2 8.5 28 Jun 373.0 305.8 v high 122%
Swanbourne 19.4 +0.5 30.2 28 Aug 10.6 +0.5 4.6 19 Jun 468.2 396.1 high 118%
South Coast (district 09A)
Albany 17.4 +1.1 25.5 29 Aug 9.7 +1.1 5.8 28 Jun 357.3 400.2 average 89%
Albany Airport 17.4   25.1 29 Aug 7.9   2.2 21 Aug 308.2


Bridgetown 16.9 +0.6 23.7 2 Jun 5.0 +0.1 -0.6 4 Jun



Bunbury 18.5 +0.7 24.2 1 Jun 7.4 -0.2 1.2 24 Aug 368.4 397.0 average 93%
Busselton Aero 17.7 +0.4 23.3 1 Jun 7.4 +0.2 1.1 24 Aug 353.4 371.4 average 95%
Cape Leeuwin 17.9 +1.1 25.5 28 Aug 12.2 +0.6 8.0 28 Jun 426.8 490.1 low 87%
Cape Naturaliste 17.9 +1.2 21.8 1 Jun 11.0 +0.3 5.9 24 Aug 321.0 433.3 low 74%
Collie East 17.7 +0.8 27.2 28 Aug 4.2 -0.1 -2.3 3 Jun



Donnybrook 18.4 +1.3 27.0 28 Aug     2.4 16 Jul 422.0 522.0 low 81%
Dwellingup 17.0 +1.4 27.1 28 Aug 6.1 +0.3 0.2 19 Jun 577.6 663.8 average 87%
Esperance 18.2 +0.5 31.1 29 Aug 8.6 -0.1 3.3 26 Aug 239.4 257.7 average 93%
Esperance Aero 17.6 +0.5 29.8 29 Aug 7.8 -0.1 4.4 6 Jul 187.6 215.0 average 87%
Hopetoun North 18.6 0.0 29.3 29 Aug 8.1 +0.1 2.8 27 Aug 128.0 171.4 v low 75%
Jarrahwood 17.7 +0.8 24.0 28 Aug 5.1 -0.1 -1.2 24 Aug 382.4 484.9 low 79%
Mandurah 18.5 +0.4 23.9 28 Aug 11.1 0.0 7.1 18 Jun 371.2 338.5 average 110%
Manjimup 16.3 +1.4 23.1 2 Jun 7.3 +0.5 2.2 24 Aug 400.8 478.9 low 84%
North Walpole 17.1 +0.6 24.2 28 Aug 9.5 +0.2 5.2 29 Jul 542.6 497.5 high 109%
Rocky Gully 15.9 +0.7 22.7 2 Jun 7.2 +0.2 2.7 28 Jul 315.0 290.9 average 108%
Shannon 15.7 +0.4 22.1 2 Jun 7.1 +0.1 1.8 26 Aug 523.0 477.7 average 109%
Witchcliffe 17.1 +0.2 22.5 1 Jun 8.3 -0.1 2.7 26 Aug 534.0 523.8 average 102%
North Central (district 10)
Bencubbin 17.8 +0.6 28.4 28 Aug     2.0 29 Jun 126.8 130.8 average 97%
Cunderdin Airfield 18.5 +0.7 29.0 28 Aug 5.2 +0.1 -0.3 18 Aug 145.8 128.5 high 113%
Merredin 17.8 +0.7 28.0 28 Aug 6.4 +0.5 0.0 18 Aug 155.8 138.4 average 113%
Northam 18.8 +1.2 28.2 28 Aug 5.4 -0.4 -0.5 5 Jun 198.5 222.2 average 89%
York 18.5 +0.6 28.5 28 Aug 4.4 +0.3 -1.6 3 Jun 243.4 189.4 v high 129%
South Central (district 10A)
Beverley 18.0 +0.5 24.4 22 Aug 5.5 +0.1 -0.8 3 Jun 219.2 212.8 average 103%
Brookton 17.4 +0.7 26.8 28 Aug 5.1 +0.2 -0.2 19 Jun 217.5 232.0 average 94%
Corrigin 17.0 +0.9 27.1 28 Aug 4.9 -0.2 -2.3 20 Jun 168.9 166.3 average 102%
Hyden 18.3 +1.1 28.5 28 Aug 4.6 -0.4 -2.5 19 Jun 119.4 137.2 average 87%
Jacup 16.9 +0.5 27.2 28 Aug 5.7 -0.2 1.2 19 Jun 119.8 144.3 low 83%
Katanning 15.8 +0.4 23.6 28 Aug 6.2 0.0 0.8 20 Jun 192.6 181.9 high 106%
Lake Grace 16.8 +0.3 26.6 28 Aug 5.8 0.0 0.0 19 Jun 126.2 106.9 average 118%
Narembeen 18.0 +0.7 28.1 28 Aug 5.9 +0.2 0.4 29 Jun 143.2 142.9 average 100%
Narrogin 16.6 +1.4 25.5 28 Aug 5.3 -0.3 -0.4 20 Jun 225.6 239.2 average 94%
Newdegate Research Station 16.5 +0.4 25.7 28 Aug 4.4 -0.1 -3.2 20 Jun 131.4 142.1 average 92%
Pingelly 16.9 +0.9 26.4 28 Aug 6.2 +0.3 1.1 18 Jun 227.5 224.8 average 101%
Ravensthorpe 17.8 +0.8 27.0 28 Aug     1.9 20 Jun 121.4 135.2 average 90%
Wagin 16.8 +0.8 25.1 28 Aug 5.9 0.0 0.0 20 Jun 210.7 198.2 average 106%
Wandering 17.1 +0.7 24.9 28 Aug 4.4 +0.2 -2.5 3 Jun 343.6 271.5 high 127%
Eucla (district 11)
Eucla 19.2 +0.5 33.5 30 Aug 7.5 -0.1 1.1 20 Aug 56.6 81.4 low 70%
Eyre 20.0 +1.0 31.8 30 Aug 4.4 -1.7 -6.2 20 Jun 50.2 103.9 v low 48%
Forrest 20.0 +0.4 32.2 30 Aug 5.0 -0.6 -0.9 6 Jun 18.6 43.1 low 43%
Red Rocks Point 19.2 +0.1 31.7 30 Aug 8.1 -0.1 1.7 9 Jul 2.0 108.4 v low 2%
South East (district 12)
Bulga Downs 20.6 +0.2 30.8 28 Aug 5.9 +0.2 0.0 30 Jun



Kalgoorlie-Boulder Airport 18.5 +0.8 30.4 29 Aug 6.1 +0.4 -0.5 29 Jun 65.6 72.8 average 90%
Laverton Aero 20.5 +1.3 31.0 29 Aug 6.8 +0.1 -0.9 1 Jul 13.6 40.7 v low 33%
Leinster Aero 20.7 +0.8 30.4 28 Aug 6.6 -0.4 0.4 29 Jun 15.6 41.4 v low 38%
Leonora Aero 20.7 +0.7 30.7 29 Aug 6.5 -0.4 -0.3 30 Jun 23.4 41.6 low 56%
Munglinup West 17.9 +0.5 30.5 29 Aug 6.8 -0.3 2.9 19 Jun 112.2 126.4 low 89%
Norseman Aero 18.2 0.0 31.4 29 Aug 3.6 -0.8 -4.9 20 Jun 70.8 62.7 average 113%
Salmon Gums Res.Stn. 17.5 +0.7 30.6 29 Aug 4.5 -0.5 -4.6 20 Jun 109.4 109.0 average 100%
North East (district 13)
Carnegie 23.2 +1.0 31.6 30 Aug     -1.0 30 Jun 11.0 33.7 average 33%
Giles Meteorological Office 22.9 +1.8 29.6 31 Aug 7.9 0.0 1.4 30 Jun 0 38.3 lowest 0%
Telfer Aero 27.6 +1.2 34.5 28 Aug 12.1 +0.4 5.9 6 Jun 1.6 29.0 low 6%
Warburton Airfield 23.0 +1.4 32.0 31 Aug 7.2 +0.7 -1.1 30 Jun 4.2 39.3 low 11%
Wiluna 21.8 +1.4 29.0 26 Jun 6.0 -0.3 1.0 30 Jun 17.6 48.2 low 37%
Wiluna Aero 22.1   31.2 28 Aug 6.2   -1.9 30 Jun 6.6


Offshore Islands (district 200)
Adele Island 28.1   30.1 18 Jun 23.6   21.2 16 Jul



Browse Island 28.1   30.0 13 Jun 25.0   23.1 7 Jun



Rowley Shoals 25.9   28.0 18 Jun 23.7   21.2 21 Jun




Notes

The Seasonal climate summary, generally published on the first working day of each month, 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 7 pm on Sunday 1 September 2019. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

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.

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.

Further information

Media
(03) 9669 4057
Enquiries