Western Australia in September 2026

Rainfall

  • Rainfall totals in September were above to very much above average for most of the state with highest on record across large areas of the Southern Interior, Goldfields and Eucla districts. Rainfall totals in September were below to very much below average for south western parts and for the Central West district.
  • Western Australia's area-averaged rainfall total in September was 25.3 mm, 147% above the 1961–1990 average, the second-wettest on record for all Septembers since 1900.
  • It was the wettest September in Western Australia since 1904.
  • Many sites had their highest September daily rainfall on record.
  • Many sites had their highest total September rainfall on record.
  • Some sites had their highest total September rainfall for at least 20 years.

Temperature

Events

  • Four-day rainfall totals ending 9 am on 9 September ranged between 10 and 50 mm, and locally higher, in large parts of the Goldfields and Southern Interior districts. Average September rainfall in these areas is generally less than 10 mm.
  • Five-day rainfall totals ending 9 am on 30 September of more than 50 mm were recorded across most of the Goldfields district, noting that average September rainfall in this area is 5 to 25 mm.
  • For more details, visit the September national climate summary.

Extremes in September 2026
Hottest day 40.6 °C at Port Hedland Airport on the 15th
40.6 °C at Roebourne Aero on the 23rd
Warmest days on average 37.7 °C at Fitzroy Crossing Aero
Coolest days on average 18.1 °C at Rocky Gully
Coldest day 11.5 °C at Ongerup on the 30th
Coldest night 0.3 °C at Newdegate Research Station on the 5th
Coolest nights on average 7.9 °C at York
7.9 °C at Wandering
Warmest nights on average 25.2 °C at Troughton Island
25.2 °C at Adele Island
Warmest night 27.1 °C at Marble Bar on the 15th
Warmest on average overall 29.6 °C at Wyndham Aero
Coolest on average overall 13.7 °C at Rocky Gully
Wettest overall 136.6 mm at Leonora Aero
Wettest day 58.8 mm at Leonora Aero on the 7th
Strongest wind gust 106.0 km/h at Cape Leeuwin on the 19th

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 September daily rainfall
New record
(mm)
Old
record
Years of
record
Average for
September
Edjudina 50.6 on the 27th 35.5 on 01 Sep 2010 123 9.3
Wattening 55.4 on the 27th 30.0 on 23 Sep 1913 114 35.1
Narndee 47.8 on the 16th 34.0 on 19 Sep 1974 95 11.9
Warburton Airfield 40.2 on the 9th 26.4 on 29 Sep 2004 66 5.5
Mordetta 37.2 on the 28th 22.0 on 22 Sep 2017 55 28.4
Prenti Downs 36.0 on the 20th 27.0 on 30 Sep 1992 45 4.7
Jacup 44.6 on the 27th 34.8 on 30 Sep 2003 33 40.9
Tjukayirla 22.5 on the 24th 19.8 on 02 Sep 2010 30 3.4
Katanning 30.6 on the 28th 25.0 on 04 Sep 2012 28 48.7
Munglinup West 24.4 on the 26th 24.2 on 08 Sep 2013 25 35.7
Leonora Aero 58.8 on the 7th 29.6 on 06 Sep 2022 20 7.5



Record highest September total rainfall
New record
(mm)
Old
record
Years of
record
Average for
September
Edjudina 117.6 114.0 in 1904 121 9.3
Mundrabilla Station 93.2 90.0 in 2010 112 17.9
Learmonth Airport 18.6 =18.6 in 2022 70 2.2
Carnegie 63.4 50.6 in 2022 70 4.3
Warburton Airfield 75.0 57.8 in 2010 65 5.5
Warra Jarra 115.4 99.2 in 2017 46 46.6
Prenti Downs 77.0 40.4 in 2022 44 4.7
Jacup 105.6 83.0 in 2003 32 40.9
Leinster Aero 56.2 26.8 in 2010 31 4.1
Tjukayirla 77.4 23.4 in 2010 29 3.4



Highest September total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
September
Kalgoorlie-Boulder Airport 80.2 98.3 in 1955 14.1
Bulong 79.6 101.7 in 1955 14.4
Narndee 48.2 65.2 in 1974 12.6
Gairdner 97.5 99.1 in 1985 47.0
Mordetta 58.9 69.0 in 1992 29.8
Newdegate Research Station 59.8 69.0 in 1992 32.6

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 September temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Albany 31.8 on the 17th 30.6 on 10 Sep 1916 84 17.4
Rocky Gully 29.1 on the 17th 27.4 on 10 Sep 2019 31 16.8
Shannon 28.0 on the 17th =28.0 on 29 Sep 2006 30 16.6
Katanning 31.8 on the 17th 31.0 on 29 Sep 2006 28 17.7
North Walpole 29.6 on the 17th 28.6 on 24 Sep 2015 23 17.6



Record highest September mean maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Cape Leeuwin 19.1 18.6 in 2015 130 17.2
Cape Naturaliste 20.0 19.9 in 2024 123 17.5
Telfer Aero 36.2 35.9 in 2023 53 33.0
Garden Island HSF 20.6 20.2 in 2023 25 19.1



Record highest September daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Narrogin 18.0 on the 17th 15.5 on 17 Sep 1976 112 6.0
Manjimup 15.7 on the 17th 15.5 on 10 Sep 2015 70 7.3
Wongan Hills 21.0 on the 17th 20.1 on 28 Sep 2023 61 7.7
Karnet 19.2 on the 17th 16.2 on 21 Sep 2014 61 7.4
Badgingarra Research Stn 17.5 on the 17th 17.3 on 30 Sep 2010 60 7.7
Ongerup 16.5 on the 17th 15.0 on 28 Sep 2023 60 6.5
Beverley 18.6 on the 17th 15.2 on 30 Sep 2010 58 5.9
Goomalling 20.9 on the 17th 19.0 on 28 Sep 2023 51 7.0
Murchison 22.5 on the 18th 19.1 on 30 Sep 1990 38 9.8
Swanbourne 19.1 on the 17th 19.0 on 10 Sep 2015 34 11.1
Perth Metro 18.2 on the 17th =18.2 on 30 Sep 2010 33 9.7
Paraburdoo Aero 24.0 on the 22nd 23.7 on 20 Sep 2015 31 14.1
Rocky Gully 17.2 on the 17th 16.2 on 10 Sep 2015 31 7.2
Newdegate Research Station 15.4 on the 18th 14.3 on 11 Sep 2006 31 4.9
Cunderdin Airfield 17.9 on the 17th 17.0 on 30 Sep 2010 30 5.0
Lake Grace 16.1 on the 17th 15.2 on 28 Sep 2023 30 6.6
Katanning 15.6 on the 17th =15.6 on 10 Sep 2015 28 6.3
Wandering 18.2 on the 17th 14.0 on 27 Sep 2000 28 4.8
Gooseberry Hill 19.5 on the 17th 19.4 on 28 Sep 2023 27 10.3
Mandurah 18.4 on the 17th 18.2 on 28 Sep 2023 25 11.9



Record highest September mean minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Cape Leeuwin 13.3 =13.3 in 2023 130 11.8
Albany 12.1 11.5 in 1918 110 9.4
Narrogin 9.3 8.5 in 2023 109 6.0
Eucla 12.6 11.8 in 1916 106 9.2
Dwellingup 9.5 9.0 in 2023 89 6.5
Salmon Gums Res.Stn. 9.1 8.5 in 2023 88 5.7
Manjimup 9.3 9.0 in 2023 87 7.3
Perth Airport M.O. 11.5 11.1 in 2023 83 8.9
Giles Meteorological Office 18.3 15.7 in 2023 71 13.1
Pearce RAAF 11.2 11.0 in 2023 66 8.9
Karnet 10.2 9.7 in 2023 60 7.4
Wongan Hills 11.9 10.0 in 2023 60 7.7
Brookton 8.4 7.7 in 2014 59 5.4
Esperance 12.4 11.9 in 2023 58 9.6
Beverley 9.4 8.3 in 2013 57 5.9
Hyden 8.8 =8.8 in 2023 54 6.0
Telfer Aero 21.4 19.9 in 2020 53 16.7
Wagin 9.2 8.7 in 2013 52 6.3
Warburton Airfield 17.1 15.8 in 2023 52 11.6
Jandakot Aero 11.1 =11.1 in 2023 37 8.4
Murchison 14.5 14.3 in 2023 37 9.8
Carnegie 16.2 14.2 in 2023 36 11.6
Esperance Aero 11.1 10.7 in 2023 35 8.5
Forrest 11.5 10.4 in 2023 34 8.2
Jacup 8.8 8.4 in 2023 34 6.3
Rocky Gully 9.3 8.8 in 2023 31 7.2
Newdegate Research Station 8.2 7.8 in 2023 31 4.9
York 7.9 7.1 in 2023 31 4.8
Newman Aero 17.0 16.8 in 2024 30 12.6
Lake Grace 9.4 9.1 in 2023 30 6.6
Cunderdin Airfield 8.2 7.4 in 2013 30 5.0
Hopetoun North 11.7 11.1 in 2023 30 8.7
Wandering 7.9 7.2 in 2013 28 4.8
Katanning 8.6 8.2 in 2023 28 6.3
Mandurah 13.9 13.7 in 2023 25 11.9
Collie East 8.5 8.4 in 2013 24 5.7
Bulga Downs 13.0 =13.0 in 2023 24 9.3
North Walpole 10.8 10.3 in 2023 23 9.3



Highest September mean minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
September
Gingin Aero 9.8 11.0 in 1996 7.5
Jurien Bay 11.7 11.8 in 2000 10.0

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 September mean temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Cape Leeuwin 16.2 15.9 in 2023 130 14.5
Cape Naturaliste 15.9 15.8 in 2023 123 14.0
Dwellingup 14.5 14.4 in 2023 89 12.0
Perth Airport M.O. 17.2 16.9 in 2023 83 14.6
Giles Meteorological Office 24.7 23.4 in 2023 71 20.4
Pearce RAAF 16.8 =16.8 in 2023 66 14.6
Wongan Hills 17.4 17.1 in 2023 60 14.3
Karnet 14.7 14.6 in 2023 60 12.5
Brookton 15.2 14.4 in 2023 59 12.4
Beverley 15.9 15.6 in 2023 57 13.2
Telfer Aero 28.8 27.9 in 2020 53 24.8
Jarrahwood 14.2 14.0 in 2023 45 12.2
Jandakot Aero 16.5 =16.5 in 2023 37 14.4
Windy Harbour 14.8 =14.8 in 2023 37 13.6
Bunbury 15.4 =15.4 in 2023 31 13.7
Busselton Aero 14.6 14.5 in 2023 29 13.2
Katanning 14.2 14.0 in 2023 28 12.0
Wandering 14.0 13.8 in 2023 28 11.7
Marble Bar 28.8 =28.8 in 2000 27 26.0
Garden Island HSF 17.0 16.9 in 2023 25 15.5
Collie East 14.1 13.9 in 2023 24 12.2
North Walpole 14.7 =14.7 in 2023 23 13.4




Summary statistics for September 2026
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2026
Diff
from
average
Highest for
September
2026
Mean for
September
2026
Diff
from
average
Lowest for
September
2026
Total for
September
2026
Average
for
September
Rank of
September
2026
Fraction of
September
average
North Kimberley (district 01)
Doongan 34.3 -1.1 36.0 22nd 17.9 +0.1 14.4 1st 0.0 6.6 lowest 0%
Kalumburu 35.2 -0.8 38.6 9th 19.6 +0.3 16.8 1st 3.0 2.1 high 143%
Troughton Island 31.2 +0.7 31.8 22nd 25.2 +0.5 22.9 1st 0.0 0.3 lowest 0%
Truscott 32.7 -0.7 34.3 2nd 21.7 -0.3 18.9 1st 0.0 0.6 lowest 0%
Wyndham Aero 37.3 -0.5 39.2 22nd 21.8 +0.2 17.4 3rd 0.2 4.3 average 5%
East Kimberley (district 02)
Halls Creek Airport 35.5 +0.4 37.7 14th 18.2 +0.5 12.0 2nd 0.0 5.6 lowest 0%
Kununurra Aero 37.3 +0.5 39.3 22nd 19.1 -0.7 15.7 2nd 0.2 5.2 average 4%
West Kimberley (district 03)
Broome Airport 31.8 -0.2 38.1 17th 20.8 +2.2 14.6 9th 0.6 1.5 average 40%
Curtin Aero 36.8 0.0 38.9 22nd 18.5 +0.1 14.1 9th 0.0 2.4 lowest 0%
Cygnet Bay 33.4 +0.7 35.3 27th 21.9 +3.7 19.4 9th 0.2 1.5 high 13%
Derby Aero 36.3 +0.6 38.6 14th 20.7 +1.3 16.6 9th 0.0 1.8 lowest 0%
Fitzroy Crossing Aero 37.7 +0.2 39.7 14th 20.7 +2.0 14.6 2nd 0.0 1.9 lowest 0%
Yampi Sound (Defence) 37.0 39.7 14th 19.5 14.9 1st 4.0
De Grey (district 04)
Bedout Island 28.9 +0.1 29.7 10th 23.0 +0.7 22.4 5th
Karratha Aero 33.1 +2.0 38.3 24th 19.8 +2.5 15.1 8th 0.0 1.4 lowest 0%
Legendre Island 29.5 +1.1 34.5 25th 22.1 +1.3 19.2 7th
Mandora 34.8 +0.9 40.3 14th 17.8 +2.0 12.5 8th 0.2 1.1 high 18%
Marble Bar 36.7 +1.8 39.5 25th 20.9 +3.8 15.6 7th 0.2 4.5 average 4%
Pardoo Station 33.7 +0.3 40.7 15th 16.7 +0.7 12.0 8th 0.3 2.7 high 11%
Port Hedland Airport 35.0 +2.4 40.6 15th 18.8 +3.1 14.0 7th 0.0 1.3 lowest 0%
Roebourne Aero 35.8 +2.1 40.6 23rd 18.6 +2.8 12.7 7th 0.0 2.9 lowest 0%
Fortescue (district 05)
Barrow Island Airport 28.7 +1.4 32.7 18th 21.2 +1.4 17.3 12th 0.4 1.7 average 24%
Karijini North 33.8 36.8 2nd 21.1 15.5 9th 0.2
Learmonth Airport 31.4 +1.7 36.7 21st 15.5 +1.6 13.0 30th 18.6 2.2 highest 846%
Mardie 33.3 +0.9 38.3 24th 17.9 +3.3 13.1 7th 0.2 1.4 high 14%
Onslow Airport 32.4 +2.1 37.4 21st 18.6 +2.9 15.3 6th 4.8 1.7 high 282%
Thevenard Island 28.7 +0.8 34.2 25th 20.4 +1.5 16.4 6th 1.2 2.4 average 50%
West Gascoyne (district 06)
Carnarvon Airport 25.0 +0.3 29.8 18th 15.7 +1.8 11.3 5th 2.4 6.3 average 38%
Gascoyne Junction 30.3 +1.8 36.5 20th 14.3 +2.1 12.5 8th 3.0 2.9 high 103%
Murchison 28.7 +2.1 35.6 17th 14.5 +4.7 9.4 6th 15.4 8.0 high 192%
Shark Bay Airport 25.2 -1.0 29.2 18th 13.3 +0.4 10.0 3rd 2.6 7.7 low 34%
East Gascoyne (district 07)
Newman Aero 31.9 +1.3 35.4 14th 17.0 +4.4 10.8 7th 5.8 5.4 high 107%
Paraburdoo Aero 32.8 +1.3 36.8 17th 17.8 +3.7 13.6 5th 2.4 4.2 high 57%
Murchison (district 07A)
Meekatharra Airport 28.4 +2.5 35.1 18th 15.1 +3.4 11.0 8th 14.8 4.9 high 302%
Mount Magnet Aero 26.1 +1.1 34.6 18th 12.7 +2.0 7.6 3rd 17.2 10.3 high 167%
Paynes Find 25.1 +1.1 34.2 18th 10.8 +2.6 3.9 3rd 32.0 13.9 high 230%
North Coast (district 08)
Dalwallinu 23.1 +1.6 33.3 17th 8.2 +1.2 3.0 13th 1.6 22.2 lowest 7%
Geraldton Airport 23.1 -0.3 31.0 16th 10.3 +1.0 6.1 3rd 31.4 28.8 average 109%
Kalbarri 24.0 -0.2 27.2 11th 11.5 +0.5 7.0 3rd 9.9 22.9 low 43%
Morawa Airport 25.8 +2.3 35.5 17th 9.8 +1.9 4.0 3rd 0.8 21.4 lowest 4%
Mullewa 25.8 +2.2 34.5 17th 10.0 +1.3 5.0 9th 5.3 21.2 low 25%
North Island 22.9 +0.6 25.9 18th 16.5 +0.5 13.2 18th 14.4 18.6 average 77%
Wongan Hills 22.9 +2.0 32.8 17th 11.8 +4.1 8.0 13th 5.8 29.0 v low 20%
Central Coast (district 09)
Badgingarra Research Stn 21.5 +0.8 28.9 16th 9.3 +1.6 4.1 13th 11.2 47.3 v low 24%
Bickley 19.1 +1.3 27.8 16th 10.3 +1.9 7.1 9th 45.8 122.5 v low 37%
Garden Island HSF 20.5 +1.4 29.3 16th 13.5 +1.5 10.2 1st 37.6 61.6 low 61%
Gingin Aero 22.3 +1.3 31.1 17th 9.8 +2.3 4.3 24th 18.4 74.0 v low 25%
Jandakot Aero 21.9 +1.6 30.1 16th 11.1 +2.7 6.8 1st 42.6 83.0 low 51%
Jurien Bay 22.5 +1.0 29.2 16th 11.7 +1.7 8.4 23rd 13.1 42.3 low 31%
Karnet 19.2 +1.5 27.5 17th 10.2 +2.8 3.7 14th 54.4 129.0 v low 42%
Lancelin (Defence) 21.6 30.4 16th 11.5 5.8 13th 21.6
Millendon (Swan Valley) 22.4 31.3 17th 11.1 6.4 24th 22.8
Pearce RAAF 22.3 +2.0 31.2 17th 11.2 +2.3 6.2 2nd 21.8 67.3 v low 32%
Perth Airport 22.3 30.7 16th 11.8 7.1 29th 28.6
Perth Airport M.O. 22.7 +2.3 30.9 16th 11.5 +2.6 7.1 29th 30.6 72.3 v low 42%
Perth Metro 22.1 +1.4 30.3 16th 12.0 +2.3 8.3 1st 38.2 79.9 v low 48%
Rottnest Island 19.8 +0.8 27.8 16th 14.2 +1.2 11.5 9th 32.2 51.2 low 63%
Swanbourne 21.3 +1.3 30.7 16th 12.9 +1.8 9.6 1st 36.2 76.9 low 47%
South Coast (district 09A)
Albany 18.8 +1.4 31.8 17th 12.1 +2.7 9.4 10th 61.1 100.8 low 61%
Albany Airport 19.4 +0.8 31.1 17th 10.3 +2.0 6.2 11th 70.4 91.7 average 77%
Bridgetown 17.3 -0.6 18.8 8th 8.1 +2.1 2.8 7th 24.6 84.0 v low 29%
Bunbury 20.1 +1.3 27.4 16th 10.7 +2.1 5.0 1st 41.0 78.2 low 52%
Busselton Aero 19.7 +1.2 26.2 16th 9.4 +1.5 5.3 7th 50.0 74.0 low 68%
Cape Leeuwin 19.1 +1.9 25.3 18th 13.3 +1.5 10.6 10th 78.0 88.8 average 88%
Cape Naturaliste 19.9 +2.4 25.4 16th 11.9 +1.5 8.3 26th 64.8 74.7 average 87%
Collie East 19.7 +1.0 28.2 16th 8.5 +2.8 3.2 11th 34.4 85.1 low 40%
Donnybrook 21.5 +2.6 30.0 16th 10.9 +3.8 7.1 11th 49.4 101.3 low 49%
Dwellingup 19.5 +2.1 28.1 16th 9.5 +3.0 4.9 1st 76.6 128.5 low 60%
Esperance 21.3 +1.7 32.5 17th 12.4 +2.8 7.7 2nd 24.4 59.9 v low 41%
Esperance Aero 20.4 +1.2 29.9 17th 11.1 +2.6 5.9 5th 27.6 55.9 low 49%
Hopetoun North 20.6 +0.5 33.9 17th 11.7 +3.0 6.2 5th 69.6 47.5 high 146%
Jarrahwood 19.9 +1.5 28.4 16th 8.4 +2.4 3.2 7th 71.4 101.3 low 70%
Mandurah 20.8 +1.5 26.9 16th 13.9 +2.0 10.4 1st 34.6 57.1 average 61%
Manjimup 18.6 +1.9 27.8 17th 9.3 +2.0 5.8 7th 55.2 106.9 low 52%
Mount Barker 20.0 +3.1 29.0 17th 8.6 +1.6 6.5 1st 65.8 78.6 average 84%
North Walpole 18.5 +0.9 29.6 17th 10.8 +1.5 8.1 1st 11.8 105.4 lowest 11%
Rocky Gully 18.1 +1.3 29.1 17th 9.3 +2.1 4.7 1st 57.0 91.4 low 62%
Shannon 18.3 +1.7 28.0 17th 9.3 +1.8 5.9 1st 70.0 113.1 low 62%
Windy Harbour 19.0 +1.3 27.5 17th 10.1 +0.6 5.5 9th 80.8 113.2 low 71%
Witchcliffe West 18.4 24.7 16th 10.0 4.9 21st 63.8
North Central (district 10)
Bencubbin 22.5 +1.4 33.5 18th 8.3 +1.0 5.0 14th 7.2 21.3 low 34%
Cunderdin Airfield 22.9 +1.6 33.6 17th 8.2 +3.2 1.7 13th 9.4 25.6 low 37%
Goomalling 23.9 +2.8 33.2 17th 9.8 +2.8 5.1 24th 4.8 27.1 v low 18%
Kellerberrin 23.1 +2.2 32.0 17th 7.0 +0.7 2.0 29th 14.6 25.6 low 57%
Merredin 23.4 +2.6 32.1 17th 8.5 +1.7 2.5 8th 12.0 25.3 low 47%
Northam 22.3 +1.7 33.0 17th 9.6 +2.7 4.5 14th 27.4 36.8 average 74%
York 22.3 +1.7 33.0 17th 7.9 +3.1 2.4 13th 19.0 37.4 low 51%
South Central (district 10A)
Beverley 22.5 +1.9 33.2 17th 9.4 +3.5 4.2 29th 17.2 35.7 low 48%
Brookton 21.9 +2.5 32.4 17th 8.4 +3.0 2.9 29th 12.2 38.0 v low 32%
Corrigin 21.9 +2.5 32.0 20th 8.3 +2.5 2.0 29th 16.4 29.2 low 56%
Hyden 22.1 +1.4 31.7 17th 8.8 +2.8 3.0 5th 40.2 27.1 high 148%
Jacup 19.9 +0.8 32.9 17th 8.8 +2.5 1.1 5th 105.6 40.9 highest 258%
Katanning 19.6 +1.9 31.8 17th 8.6 +2.3 3.8 5th 72.6 47.5 high 153%
Lake Grace 20.9 +1.3 31.8 17th 9.4 +2.8 3.5 5th 34.2 25.5 high 134%
Narrogin 20.3 +2.4 31.6 17th 9.3 +3.3 3.1 2nd 25.0 46.0 low 54%
Newdegate Research Station 21.0 +1.8 32.2 17th 8.2 +3.3 0.3 5th 59.8 32.2 high 186%
Ongerup 20.1 +1.8 28.0 18th 9.1 +2.6 3.5 5th 29.7 38.2 average 78%
Ravensthorpe 21.4 +1.7 32.0 18th 8.9 +1.4 3.5 5th 65.1 41.3 high 158%
Wagin 19.7 +1.3 28.5 18th 9.2 +2.9 4.0 5th 23.4 40.5 low 58%
Wandering 20.1 +1.5 30.4 17th 7.9 +3.1 3.1 2nd 14.8 55.6 v low 27%
Eucla (district 11)
Eucla 22.0 +0.6 35.2 19th 12.6 +3.4 7.1 6th 54.8 21.7 high 252%
Forrest 23.9 -0.8 34.9 19th 11.5 +3.3 6.7 17th 57.6 12.9 high 446%
South East (district 12)
Bulga Downs 27.1 +1.4 35.9 18th 13.0 +3.7 8.8 5th 16.8 7.7 high 218%
Kalgoorlie-Boulder Airport 23.9 +1.5 34.8 18th 11.5 +3.3 4.9 5th 80.2 13.3 high 603%
Laverton Aero 25.1 +0.2 33.2 18th 14.2 +3.5 8.0 5th 52.4 7.5 high 699%
Leinster Aero 26.9 +1.1 35.5 18th 14.2 +3.3 8.2 5th 56.2 4.1 highest 1371%
Leonora Aero 25.1 -0.4 33.2 18th 13.5 +3.0 8.0 5th 136.6 7.5 highest 1821%
Munglinup West 20.7 +0.3 32.4 17th 9.6 +2.1 3.7 5th 43.0 35.7 average 120%
Norseman Aero 22.6 0.0 36.5 18th 10.1 +3.5 1.6 5th 61.6 17.9 high 344%
Salmon Gums Res.Stn. 22.3 +1.7 36.3 18th 9.1 +3.4 1.6 13th 23.8 30.6 average 78%
Southern Cross Airfield 23.0 +0.9 34.5 18th 9.3 +3.6 1.7 5th 11.8 19.6 low 60%
North East (district 13)
Carnegie 29.4 +0.5 35.5 19th 16.2 +4.6 10.0 9th 63.4 4.3 highest 1474%
Giles Meteorological Office 31.2 +3.5 35.2 25th 18.5 +5.4 14.1 10th 28.4 10.8 high 263%
Telfer Aero 36.3 +3.3 39.0 15th 21.4 +4.7 15.4 9th 3.6 3.2 high 112%
Warburton Airfield 29.6 +1.4 36.0 23rd 17.1 +5.5 12.3 5th 75.0 5.5 highest 1364%
Wiluna Aero 28.7 35.0 18th 14.9 9.2 5th 33.4
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 Thursday 1 October 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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