Western Australia in August 2026

Rainfall

Temperature

Events

  • Between 2 and 5 August, low pressure troughs and a cold front associated with a low pressure system, brought low to moderate rainfall totals to western parts of Western Australia
  • In the 24 hours to 9 am on 8 August, a cold front brought daily rainfall totals of 10 to 35 mm to coastal regions of Western Australia's Lower West and South West districts and 5 to 15 mm to parts of the Central Wheat Belt district. Thunderstorms resulted in small hail in parts of the state's south-west, while snow was observed at Bluff Knoll in the Stirling Ranges.
  • From 17 to 19 August, cold fronts and low pressure troughs moved over southern Australia. They combined with moisture transported from the Indian Ocean, bringing rain and isolated thunderstorms to the south-west of Western Australia.
  • A low pressure system that developed inland of the Western Australia's west coast on 22 August, connected with tropical moisture, bringing rain and thunderstorms to the state's south and inland parts, with daily totals in the 24 hours to 9 am on 23 August generally between 5 and 35 mm.
  • A cold front and the associated low pressure trough crossed the south-western west of Western Australia late on 25 August bringing showers. On 26 August, a low pressure system developed over south-western Western Australia, slowly moving eastwards, bringing widespread rain and thunderstorms with local heavy falls to the state's south. Thunderstorms affected much of Goldfields district on 28 August and in the 24 hours to 9 am on 29 August, Laverton Aero observed 29.4 mm, its record highest daily rainfall for August (33 years of data). The highest five-day rainfall totals (ending 9 am on 30 August) were recorded across the South West Land Division, and ranged between 20 and 50 mm, with pockets of 50 to 70 mm.
  • For more details, visit the August national climate summary.

Extremes in August 2026
Hottest day 38.1 °C at Mandora on the 21st
Warmest days on average 35.0 °C at Wyndham Aero
Coolest days on average 16.1 °C at Rocky Gully
Coldest day 9.3 °C at Bickley on the 8th
Coldest night -2.4 °C at Cunderdin Airfield on the 2nd
-2.4 °C at Newdegate Research Station on the 2nd
Coolest nights on average 3.0 °C at York
Warmest nights on average 24.0 °C at Adele Island
Warmest night 25.4 °C at Troughton Island on the 24th
Warmest on average overall 26.8 °C at Wyndham Aero
Coolest on average overall 11.0 °C at Wandering
Wettest overall 189.0 mm at Willowdale
Wettest day 98.0 mm at Credo on the 29th
Strongest wind gust 100.0 km/h at Rottnest Island on the 17th

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 August daily rainfall
New record
(mm)
Old
record
Years of
record
Average for
August
Doongin Peak 44.2 on the 27th 30.0 on 16 Aug 2022 132 42.0
Goomalling 41.0 on the 28th 38.2 on 09 Aug 2017 124 49.8
Jaroma 40.6 on the 27th 34.4 on 15 Aug 1976 104 48.8
Bungulla 48.0 on the 26th 36.8 on 16 Aug 2022 99 40.9
Ygnattering 48.2 on the 27th 40.0 on 16 Aug 2022 99 43.4
Perivale Orchard 57.2 on the 26th 55.4 on 05 Aug 1983 50 132.7
Rottnest Island 38.4 on the 27th 34.6 on 09 Aug 2017 36 86.6
Forrest 21.8 on the 29th 18.6 on 27 Aug 2005 33 12.5
Laverton Aero 29.4 on the 29th 24.0 on 05 Aug 1997 33 10.3
Hopetoun North 52.6 on the 27th 36.4 on 04 Aug 2020 31 54.9
Cunderdin Airfield 28.8 on the 27th 26.0 on 09 Aug 2017 30 43.6
Norseman Aero 28.2 on the 28th 23.0 on 01 Aug 2015 27 24.9
Shark Bay Airport 44.4 on the 22nd 30.8 on 07 Aug 2015 27 19.0
Garden Island HSF 53.0 on the 27th 42.0 on 09 Aug 2017 24 98.1
Leonora Aero 19.6 on the 5th 17.2 on 31 Aug 2010 20 11.6



Record highest August total rainfall
New record
(mm)
Old
record
Years of
record
Average for
August
Gascoyne Junction 51.8 51.3 in 1921 112 11.7
Laverton Aero 62.0 32.0 in 1997 32 10.3
Mount Magnet Aero 53.2 52.6 in 1998 31 16.7
Steep Point 79.3 76.0 in 2010 30 30.5
Norseman Aero 52.2 48.0 in 2005 26 24.9
Shark Bay Airport 81.2 54.2 in 2010 26 19.0
Parry Creek Farm 0.0 =0.0 in 2025 23 0.0



Highest August total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
August
Edaggee 81.8 87.1 in 1956 17.4
Weebo 57.4 66.5 in 1958 12.0
Meekatharra Airport 40.0 56.2 in 1965 11.0
Fort Hill 84.4 135.8 in 1992 42.5
Doodlakine 79.5 118.8 in 1992 37.1
Edjudina 65.4 79.0 in 1992 17.4
Leinster Aero 33.6 45.0 in 1997 9.4
Coodardy 44.1 46.8 in 1997 16.4
Billiluna 1.6 3.0 in 1998 1.6
Wynyangoo 43.5 49.6 in 1998 16.5
Carnarvon Airport 51.8 59.2 in 1998 17.5
Carey Downs 45.0 50.0 in 1998 12.8
Winning 39.4 47.0 in 1998 9.9
Hopetoun North 107.8 127.2 in 2001 57.7
Forrest 41.2 79.6 in 2005 13.6
Warburton Airfield 31.8 45.2 in 2005 8.7

note: there may be gaps in the historical record at some sites, so it is possible more recent higher values have gone unreported




Record highest August temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Busselton Aero 24.3 on the 30th 23.9 on 31 Aug 2023 29 17.3



Record lowest August daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Forrest 12.6 on the 11th =12.6 on 01 Aug 1998 34 21.1
Leinster Aero 12.8 on the 11th =12.8 on 05 Aug 2018 33 21.9



Record highest August mean maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Katanning 17.3 =17.3 in 2006 28 15.5



Lowest August mean maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
August
Carnegie 23.1 22.8 in 2005 24.3

note: there may be gaps in the historical record at some sites, so it is possible more recent lower values have gone unreported




Record highest August daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Telfer Aero 23.4 on the 28th 22.4 on 29 Aug 2020 53 12.7
Carnegie 18.6 on the 7th 18.4 on 18 Aug 2015 38 7.5
Paraburdoo Aero 20.2 on the 20th =20.2 on 02 Aug 2023 31 11.2
Fitzroy Crossing Aero 25.0 on the 27th 23.7 on 17 Aug 2003 30 13.8
Newman Aero 20.7 on the 19th 19.3 on 22 Aug 2009 30 8.3



Record lowest August temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Ongerup -2.0 on the 4th -1.2 on 04 Aug 2023 60 5.7
Wagin -2.0 on the 2nd -1.3 on 13 Aug 1975 56 5.7
Windy Harbour 1.5 on the 11th =1.5 on 06 Aug 2011 40 9.0
Thevenard Island 10.3 on the 13th 10.9 on 08 Aug 2018 33 17.6
Lake Grace -1.3 on the 2nd =-1.3 on 23 Aug 2010 30 5.7
Katanning -1.1 on the 2nd -1.0 on 31 Aug 2005 28 6.0



Record highest August mean minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Mardie 15.0 14.9 in 2024 70 12.6
Onslow Airport 16.4 =16.4 in 2024 61 13.8
Telfer Aero 15.4 15.2 in 2020 53 12.7
Paraburdoo Aero 13.9 13.2 in 2025 31 11.2
Hopetoun North 9.2 =9.2 in 2024 30 7.9
Newman Aero 12.5 10.7 in 2024 30 8.3
Marble Bar 16.4 15.0 in 2024 26 13.4
Roebourne Aero 14.9 14.8 in 2024 26 12.8



Highest August mean minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
August
Doongan 15.0 15.3 in 1998 12.3

note: there may be gaps in the historical record at some sites, so it is possible more recent higher values have gone unreported




Record highest August mean temperature
New record
(°C)
Old
record
Years of
record
Average for
August
Newman Aero 19.8 19.6 in 2023 30 17.3
Marble Bar 24.1 23.8 in 2023 26 21.9



Highest August mean temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
August
Esperance 14.9 15.7 in 2006 13.4

note: there may be gaps in the historical record at some sites, so it is possible more recent higher values have gone unreported





Summary statistics for August 2026
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
August
2026
Diff
from
average
Highest for
August
2026
Mean for
August
2026
Diff
from
average
Lowest for
August
2026
Total for
August
2026
Average
for
August
Rank of
August
2026
Fraction of
August
average
North Kimberley (district 01)
Doongan 32.4 +0.7 36.0 10th 15.0 +2.7 9.1 3rd 0.0 0.7 lowest 0%
Kalumburu 33.6 -0.4 36.9 30th 16.6 +1.8 12.2 3rd 0.0 0.2 lowest 0%
Troughton Island 29.5 +0.5 32.7 29th 22.9 +0.2 21.2 4th 0.0 0.5 lowest 0%
Truscott 31.6 -0.4 34.5 29th 19.3 +0.4 16.2 4th 0.0 0.3 lowest 0%
Wyndham Aero 35.0 +0.7 37.8 30th 18.5 +2.1 13.0 3rd 0.0 0.0 lowest 0%
East Kimberley (district 02)
Halls Creek Airport 31.7 +0.8 34.2 21st 15.5 +2.7 9.4 1st 0.0 2.3 lowest 0%
Kununurra Aero 34.6 +1.6 36.8 30th 16.3 +0.9 11.5 3rd 0.0 0.1 lowest 0%
West Kimberley (district 03)
Broome Airport 31.1 +0.6 36.8 26th 16.6 +1.7 13.0 5th 0.4 2.1 average 19%
Curtin Aero 33.9 +0.6 37.0 31st 16.6 +0.7 12.0 11th 0.0 1.9 lowest 0%
Cygnet Bay 32.1 +2.4 34.0 30th 19.6 +4.5 17.6 25th 0.0 0.9 lowest 0%
Derby Aero 33.8 +0.9 36.5 31st 17.1 +1.3 12.9 10th 10.0 1.1 high 909%
Fitzroy Crossing Aero 34.5 +1.0 37.2 21st 17.3 +3.5 11.2 4th 0.0 2.3 lowest 0%
Yampi Sound (Defence) 34.5 37.3 26th 15.6 11.6 4th 0.4
De Grey (district 04)
Bedout Island 26.6 +0.1 28.5 23rd 20.3 -0.1 16.7 12th
Karratha Aero 29.2 +0.8 33.3 31st 16.3 +1.7 9.7 13th 0.0 5.0 lowest 0%
Legendre Island 26.8 +0.5 30.3 31st 19.6 +0.7 15.8 10th
Mandora 33.1 +2.1 38.1 21st 14.2 +0.9 8.6 14th 0.2 2.5 high 8%
Marble Bar 31.9 +1.4 36.8 31st 16.4 +3.0 8.7 11th 0.0 1.3 lowest 0%
Pardoo Station 31.5 +1.3 36.7 31st 14.6 +1.1 8.0 11th 0.0 4.5 lowest 0%
Port Hedland Airport 30.9 +1.5 35.4 30th 15.5 +2.2 9.0 10th 0.0 4.7 lowest 0%
Roebourne Aero 31.3 +0.9 36.4 31st 14.9 +2.1 7.2 10th 0.0 2.0 lowest 0%
Fortescue (district 05)
Barrow Island Airport 25.5 +0.2 29.4 21st 18.8 +0.9 13.5 10th 0.6 4.8 low 12%
Karijini North 29.0 34.2 31st 16.5 7.2 10th 0.6
Learmonth Airport 26.3 -0.3 30.2 30th 13.5 +1.3 5.7 13th 14.2 11.8 high 120%
Mardie 29.8 +0.1 33.0 22nd 15.0 +2.4 7.5 13th 0.0 7.3 lowest 0%
Onslow Airport 28.1 +0.6 30.4 1st 16.4 +2.6 9.5 10th 0.4 8.7 low 5%
Thevenard Island 26.2 0.0 29.9 21st 18.5 +0.9 10.3 13th 0.4 5.0 low 8%
West Gascoyne (district 06)
Carnarvon Airport 23.6 +0.3 30.4 2nd 12.4 +0.8 6.0 12th 51.8 17.0 high 305%
Gascoyne Junction 25.9 +0.7 29.5 17th 12.4 +2.3 6.0 10th 51.8 11.7 highest 443%
Murchison 23.3 0.0 28.0 31st 10.4 +3.0 5.1 11th 41.2 19.6 high 210%
Shark Bay Airport 22.8 -1.4 28.1 16th 11.9 +0.6 7.2 10th 81.2 19.0 highest 427%
East Gascoyne (district 07)
Newman Aero 27.2 +0.9 34.2 31st 12.5 +4.2 0.3 10th 1.0 6.2 average 16%
Paraburdoo Aero 28.0 +0.3 33.1 30th 13.9 +2.7 5.0 10th 0.0 9.8 lowest 0%
Murchison (district 07A)
Meekatharra Airport 21.7 -0.1 29.3 31st 10.9 +2.1 3.3 9th 40.0 10.7 high 374%
Mount Magnet Aero 20.9 -0.6 28.0 31st 9.9 +1.6 2.7 12th 53.2 16.7 highest 319%
Paynes Find 21.0 +0.7 27.1 30th 7.4 +1.3 0.2 12th 23.4 28.3 average 83%
North Coast (district 08)
Carnamah 24.5 +5.2 25.0 30th 4.1 -3.2 2.8 11th 30.2 52.2 low 58%
Dalwallinu 19.0 +0.7 24.6 30th 6.4 +0.2 1.3 2nd 38.2 42.4 average 90%
Geraldton Airport 21.3 +0.2 26.0 3rd 9.5 +0.4 3.5 12th 57.8 66.9 average 86%
Kalbarri 23.1 +0.5 29.0 16th 10.7 +0.6 5.9 12th 17.8 49.4 v low 36%
Morawa Airport 21.4 +1.1 27.3 3rd 7.2 +0.6 1.1 12th 20.0 39.4 low 51%
Mullewa 21.9 +1.6 26.8 3rd 8.1 +0.8 1.4 9th 14.4 42.8 low 34%
North Island 21.7 +0.1 25.3 16th 15.0 -0.4 8.7 25th 27.8 38.3 average 73%
Wongan Hills 19.4 +1.4 24.4 30th 8.1 +1.4 3.0 11th 47.0 52.6 average 89%
Central Coast (district 09)
Badgingarra Research Stn 18.9 +0.6 23.7 3rd 8.4 +1.2 3.7 11th 75.2 85.8 average 88%
Bickley 17.1 +1.1 23.9 30th 8.1 +0.5 2.3 11th 135.6 178.3 low 76%
Garden Island HSF 19.0 +0.8 23.7 16th 11.5 +0.2 7.7 11th 134.2 98.1 high 137%
Gingin Aero 20.0 +0.8 25.3 30th 6.5 -0.2 0.2 13th 89.2 111.9 low 80%
Jandakot Aero 19.9 +1.1 25.5 30th 7.8 +0.4 0.5 11th 105.2 129.9 low 81%
Jurien Bay 21.2 +1.1 26.5 16th 10.0 +0.6 4.1 13th 73.4 82.4 average 89%
Karnet 17.3 +1.3 23.8 30th 7.5 +1.1 1.3 11th 114.1 183.6 low 62%
Lancelin (Defence) 20.3 26.0 16th 10.1 3.7 6th 71.0
Millendon (Swan Valley) 20.2 25.9 30th 7.8 1.1 11th 111.2
Pearce RAAF 19.9 +1.4 24.7 30th 8.3 0.0 1.5 11th 88.8 107.4 average 83%
Perth Airport 20.2 26.3 30th 8.8 1.7 11th 88.6
Perth Airport M.O. 20.7 +2.0 26.9 30th 8.4 +0.3 1.1 11th 88.8 119.2 low 74%
Perth Metro 20.2 +1.0 25.8 30th 8.7 +0.3 2.5 11th 97.0 125.2 low 78%
Rottnest Island 18.8 +0.8 23.2 16th 12.9 +0.5 7.4 9th 80.6 86.6 average 93%
Swanbourne 19.7 +0.8 24.6 16th 10.5 +0.3 5.1 11th 89.2 119.9 low 74%
South Coast (district 09A)
Albany 17.6 +1.2 23.4 30th 10.5 +2.0 4.6 2nd 106.4 126.9 average 84%
Albany Airport 17.9 +0.7 23.6 30th 8.3 +0.6 1.3 2nd 78.0 120.5 low 65%
Bridgetown 17.2 +0.7 22.4 30th 4.9 -0.3 -1.3 3rd 122.2 119.7 average 102%
Bunbury 18.1 +0.4 22.1 16th 7.1 -0.6 0.8 11th 109.0 122.9 average 89%
Busselton Aero 17.9 +0.6 24.3 30th 6.5 -0.8 0.7 2nd 91.6 110.9 low 83%
Cape Leeuwin 17.9 +1.4 22.8 15th 12.5 +1.2 7.7 11th 83.8 135.2 low 62%
Cape Naturaliste 18.4 +1.9 22.5 30th 10.6 +0.5 6.0 11th 116.2 113.0 average 103%
Collie East 18.1 +0.9 24.3 30th 4.9 +0.1 -1.3 3rd 81.4 116.9 low 70%
Donnybrook 18.9 +1.6 25.5 30th 6.5 +0.3 0.8 11th 122.4 147.4 average 83%
Dwellingup 17.6 +1.8 24.9 30th 6.3 +0.8 0.5 12th 169.8 193.6 average 88%
Esperance 19.7 +1.7 27.7 31st 10.0 +1.3 6.4 9th 74.6 87.1 average 86%
Esperance Aero 18.5 +1.1 26.0 31st 8.9 +1.1 4.7 11th 95.2 72.8 high 131%
Hopetoun North 19.5 +0.8 26.4 31st 9.2 +1.3 3.9 3rd 107.8 56.0 high 192%
Jarrahwood 18.2 +1.2 24.7 30th 4.6 -0.6 -2.0 2nd 109.2 148.7 low 73%
Mandurah 18.6 +0.6 24.1 30th 11.6 +0.5 5.4 11th 86.0 95.5 average 90%
Manjimup 16.5 +1.4 22.6 30th 7.2 +0.6 2.4 2nd 102.4 145.4 low 70%
Mount Barker 16.6 +1.5 22.0 30th 7.3 +1.1 2.5 11th 68.6 89.9 low 76%
North Walpole 17.1 +0.4 23.7 30th 10.0 +0.9 4.8 3rd 155.6 167.1 average 93%
Rocky Gully 16.1 +0.6 21.7 30th 7.5 +0.7 2.6 11th 68.8 97.8 low 70%
Shannon 16.4 +0.9 23.0 30th 7.6 +0.6 2.3 3rd 122.0 145.8 low 84%
Windy Harbour 17.7 +0.7 22.5 16th 8.9 -0.1 1.5 27th 111.7 167.4 low 67%
Witchcliffe West 17.1 22.4 30th 8.9 4.2 28th 98.8
North Central (district 10)
Bencubbin 18.8 +1.0 24.3 4th 5.3 -0.7 1.3 11th 51.5 37.9 high 136%
Cunderdin Airfield 19.3 +1.2 24.0 3rd 4.2 -0.4 -2.4 2nd 56.2 43.6 high 129%
Goomalling 20.1 +1.8 24.5 30th 5.3 -1.0 0.2 11th 86.5 49.8 high 174%
Kellerberrin 19.3 +1.5 24.5 26th 3.0 -2.3 -2.0 13th 88.5 41.4 high 214%
Merredin 20.9 +3.3 25.0 27th 4.5 -1.1 0.2 12th 46.7 39.7 average 118%
Northam 19.6 +1.6 24.0 30th 5.0 -0.6 0.4 13th 60.0 61.8 average 97%
York 19.4 +1.3 24.5 30th 3.0 -1.0 -2.0 2nd 56.3 63.3 average 89%
South Central (district 10A)
Beverley 19.8 +1.9 25.0 30th 4.8 -0.3 -0.8 3rd 57.1 59.5 average 96%
Brookton 18.8 +1.9 24.0 30th 4.3 -0.3 -1.0 2nd 48.6 62.7 average 78%
Corrigin 18.8 +2.3 23.0 30th 4.6 -0.2 -1.0 13th 52.0 47.9 average 109%
Hyden 19.1 +1.4 24.3 3rd 4.3 -0.5 -1.2 2nd 22.8 41.5 low 55%
Jacup 18.5 +1.6 24.5 22nd 5.7 0.0 0.5 11th 41.6 53.2 average 78%
Katanning 17.3 +1.8 23.4 22nd 5.9 -0.1 -1.1 2nd 34.8 60.7 v low 57%
Lake Grace 18.3 +1.4 23.9 22nd 5.6 -0.1 -1.3 2nd 38.0 39.3 average 97%
Narrogin 17.8 +2.4 23.5 30th 5.7 +0.5 -1.2 2nd 65.0 68.0 average 96%
Newdegate Research Station 18.1 +1.7 23.9 22nd 4.5 +0.2 -2.4 2nd 46.0 45.8 average 100%
Ongerup 19.6 +3.6 24.3 24th 5.1 -0.6 -2.0 4th 40.3 44.3 average 91%
Ravensthorpe 19.4 +2.0 25.0 31st 7.4 +0.7 1.2 11th 50.8 45.5 average 112%
Wagin 17.7 +1.6 23.0 30th 5.7 0.0 -2.0 2nd 55.6 57.0 average 98%
Wandering 17.7 +1.1 23.0 30th 4.3 +0.1 -2.2 2nd 98.8 95.8 average 103%
Eucla (district 11)
Eucla 20.5 +1.2 30.3 31st 8.7 +1.1 2.3 3rd 47.6 26.3 high 181%
Forrest 21.3 +0.2 30.1 27th 7.3 +1.3 1.6 3rd 41.2 12.7 high 324%
Red Rocks Point 19.8 +0.1 30.8 27th 8.6 +0.2 4.5 25th 55.4 35.5 high 156%
South East (district 12)
Bulga Downs 21.6 -0.6 30.5 31st 8.7 +2.3 1.7 10th 31.0 15.3 high 203%
Kalgoorlie-Boulder Airport 20.8 +2.0 29.5 31st 7.7 +1.9 1.1 12th 27.2 21.6 average 126%
Laverton Aero 20.9 -0.2 29.3 31st 9.7 +2.1 0.7 12th 62.0 10.3 highest 602%
Leinster Aero 21.0 -0.9 30.6 31st 9.9 +2.0 1.4 12th 33.6 8.6 high 391%
Leonora Aero 20.7 -1.2 29.4 31st 9.7 +1.9 1.9 12th 61.0 11.6 highest 526%
Munglinup West 18.8 +0.8 25.7 31st 7.6 +0.8 3.1 11th 70.0 46.2 high 152%
Norseman Aero 20.4 +1.1 27.4 31st 6.3 +1.7 -0.1 2nd 52.2 24.9 highest 210%
Salmon Gums Res.Stn. 19.5 +2.0 26.6 26th 5.1 +0.4 -1.9 2nd 43.6 34.6 high 126%
Southern Cross Airfield 19.4 +0.8 26.3 26th 5.4 +1.3 -0.5 12th 42.4 34.6 high 122%
North East (district 13)
Carnegie 23.1 -1.2 34.0 31st 9.6 +2.1 1.0 12th 37.6 7.7 high 488%
Giles Meteorological Office 23.9 +0.9 30.4 19th 11.8 +3.0 1.1 10th 22.8 9.3 high 245%
Telfer Aero 30.6 +2.0 36.4 31st 15.4 +2.7 7.5 10th 0.4 5.1 average 8%
Warburton Airfield 23.3 -0.2 31.0 31st 11.9 +4.4 2.1 10th 31.8 8.3 high 383%
Wiluna Aero 22.7 32.1 31st 9.8 1.2 10th 19.0
Note: From 2017, information about Christmas Island and the Cocos and Keeling Islands can be found in the climate summary for the Remote Islands and Antarctica

Notes

The Monthly climate summary, usually published in the first week of the following 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.

This statement has been prepared based on information available on Tuesday 1 September 2026. 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, excluding the current year. The length of record can vary widely from site to site. Averages are not shown for sites with fewer 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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.

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