Western Australia in April 2024

Rainfall

  • April rainfall was below average to very much below average for most of Western Australia's east and south, with some isolated areas in the south-west and interior which had the lowest April rainfall on record.
  • Rainfall was above average for parts of southern Pilbara and northern Gascoyne districts, associated with the ex-Tropical Cyclone Olga.
  • Averaged across the state, rainfall was 69.3% below the 1961–1990 average for April, the lowest since 1994.

Temperature


Extremes in April 2024
Hottest day 42.1 °C at Port Hedland Airport on the 2nd
Warmest days on average 36.9 °C at Mandora
Coolest days on average 21.1 °C at Red Rocks Point
Coldest day 15.5 °C at Jacup on the 22nd
Coldest night 1.2 °C at Jarrahwood on the 24th
Coolest nights on average 8.0 °C at Salmon Gums Res.Stn.
Warmest nights on average 27.2 °C at Troughton Island
Warmest night 29.9 °C at Mandora on the 3rd
Warmest on average overall 30.2 °C at Troughton Island
Coolest on average overall 15.8 °C at Salmon Gums Res.Stn.
Wettest overall 62.6 mm at Karratha Aero
Wettest day 54.2 mm at Karratha Aero on the 11th
Strongest wind gust 102 km/h at Legendre Island on the 10th

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 April temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Cape Naturaliste 34.1 on the 6th 32.1 on the 12th in 1999 68 22.0
Pemberton 34.0 on the 1st 33.8 on the 4th in 1991 65 21.3
Kalbarri 39.7 on the 17th 39.5 on the 13th in 2002 50 29.5
Jarrahwood 35.0 on the 6th 34.7 on the 3rd in 2013 41 23.8
Busselton Aero 34.2 on the 6th 33.7 on the 12th in 2009 27 23.9



Record highest April mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Cape Naturaliste 25.8 = 25.8 in 1999 120 22.0
Manjimup 25.1 24.8 in 1999 84 21.2
Carnarvon Airport 33.6 32.4 in 2021 77 29.2
Kalbarri 33.5 32.1 in 2011 49 29.5
Jarrahwood 27.0 26.5 in 2009 40 23.8
Swanbourne 27.9 = 27.9 in 2013 30 25.2
Bunbury 26.7 26.5 in 1999 28 24.1
Gingin Aero 28.9 = 28.9 in 2013 27 26.7
Shark Bay Airport 33.9 33.0 in 2013 23 31.0
Garden Island HSF 27.6 26.0 in 2011 22 23.8
Mandurah 26.8 26.0 in 2009 22 24.1
Collie East 25.9 25.8 in 2009 21 23.8

Highest April mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
April
Bridgetown 25.6 26.6 in 1999 23.3
Busselton Aero 26.4 26.7 in 1999 23.9
Dwellingup 26.1 26.4 in 1999 22.5
Jandakot Aero 28.2 28.4 in 1999 25.7
Perth Airport 28.9 29.0 in 1999 25.7
Rocky Gully 23.6 24.6 in 1999 21.8
Rottnest Island 25.8 26.0 in 1999 23.7



Lowest April mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
April
Eucla 21.5 =21.5 in 1977* 23.7
Eyre 22.7 22.2 in 1995* 24.3

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




Record highest April daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Broome Airport 29.8 on the 1st 29.6 on the 2nd in 2023 85 22.7
Port Hedland Airport 29.2 on the 3rd = 29.2 on the 1st in 2010 76 21.6



Record highest April mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Shark Bay Airport 19.9 19.8 in 2013 23 18.3



Lowest April mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
April
Ravensthorpe 9.4 7.7 in 1968* 11.9
Salmon Gums Res.Stn. 8.0 7.9 in 1963* 10.0
Eucla 12.3 =12.3 in 1995 13.4
Carnegie 14.5 14.3 in 2001 16.2

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




Record highest April mean temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Carnarvon Airport 26.2 = 26.2 in 2021 77 24.2
Kalbarri 26.2 25.4 in 2021 49 22.9
Shark Bay Airport 26.9 26.4 in 2013 23 24.7



Lowest April mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
April
Eucla 16.9 =16.9 in 1982* 18.6
Eyre 16.3 16.1 in 1995* 18.0

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




Summary statistics for April 2024
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2024
Diff
from
average
Highest for
April
2024
Mean for
April
2024
Diff
from
average
Lowest for
April
2024
Total for
April
2024
Average
for
April
Rank of
April
2024
Fraction of
April
average
North Kimberley (district 01)
Doongan 32.1 -1.2 34.9 1st     14.0 12th 2.8 44.7 low 6%
Kalumburu 34.2 -0.8 35.8 1st 21.4 +0.1 14.7 29th 36.2 41.0 average 88%
Troughton Island 33.3 +0.5 34.8 19th 27.2 +0.2 25.1 6th 16.0 34.4 average 47%
Truscott 32.9 -0.5 34.5 17th 23.8 -0.4 19.5 12th 12.2 70.6 average 17%
Wyndham Aero 34.4 -2.5 36.6 25th 22.0 -1.5 18.2 21st 34.2 27.6 high 124%
East Kimberley (district 02)
Argyle Aerodrome 33.4 -1.9 35.5 1st 21.5 -1.6 18.3 12th 17.6 24.3 high 72%
Halls Creek Airport 31.6   35.0 2nd 17.8   12.9 29th 0.2
Kununurra Aero 34.0 -1.5 36.0 17th 20.6 -1.2 15.3 29th 34.0 31.6 average 108%
Warmun 33.4 -1.9 38.5 30th       7.0 24.7 average 28%
West Kimberley (district 03)
Bidyadanga 36.4 +0.6 40.2 1st 23.4 +1.2 19.0 29th 1.8 24.4 average 7%
Broome Airport 35.1 +0.8 39.8 1st 22.5 -0.2 16.7 29th 32.4 25.6 high 127%
Curtin Aero 35.8 -0.7 40.0 1st 23.4 +1.1 18.1 13th 1.4 37.3 average 4%
Cygnet Bay 33.2 -0.4 36.3 1st 23.5 +0.9 19.2 30th
Derby Aero 36.1 +0.3 40.5 1st 22.6 -0.2 18.0 11th 5.4 25.3 average 21%
Fitzroy Crossing Aero 35.5 -1.4 39.6 1st 19.6 -1.2 14.5 30th 0 22.9 lowest 0%
Yampi Sound (Defence) 36.7   40.2 1st 20.3   13.7 29th 2.4
De Grey (district 04)
Karratha Aero 33.7 -0.7 39.9 2nd 22.7 -0.3 17.9 21st 62.6 18.0 v high 348%
Legendre Island 31.9 -0.6 36.1 2nd 25.1 -0.6 20.7 10th
Mandora 36.9 +0.7 41.7 2nd 22.1 +1.2 15.8 13th 0 18.7 lowest 0%
Marble Bar 35.0 -1.2 38.8 16th 21.5 -0.6 15.8 23rd 1.2 22.5 low 5%
Port Hedland Airport 36.0 +0.7 42.1 2nd 22.7 +1.1 17.4 22nd 3.6 21.0 average 17%
Roebourne Aero 35.5 -0.7 41.8 2nd 21.5 -0.4 15.4 22nd 25.0 8.9 v high 281%
Fortescue (district 05)
Barrow Island Airport 32.1 +0.8 37.5 2nd 23.8 -0.8 20.1 23rd 12.0 33.3 average 36%
Karijini North 33.5   36.8 1st 22.0   15.7 21st 0
Learmonth Airport 34.1 +0.8 39.5 2nd 20.4 0.0 16.9 22nd 28.4 19.6 high 145%
Mardie 36.5 +0.6 42.0 2nd 22.0 +0.7 16.3 21st 5.8 19.1 average 30%
Onslow Airport 35.3 +1.3 40.3 3rd 23.0 +1.4 19.9 11th 11.2 12.4 average 90%
Thevenard Island 32.9 +0.7 36.1 8th 24.3 -0.1 21.1 22nd 6.4 17.8 average 36%
West Gascoyne (district 06)
Carnarvon Airport 33.6 +4.4 40.6 3rd 18.9 -0.3 14.1 21st 3.2 15.5 average 21%
Murchison 32.6 +1.7 37.0 7th 16.9 +0.6 11.5 22nd 1.0 20.7 low 5%
Shark Bay Airport 33.9 +2.9 38.0 8th 19.9 +1.6 14.5 21st 0 9.9 lowest 0%
East Gascoyne (district 07)
Newman Aero 31.3 -0.8 34.9 15th 17.2 -0.5 9.8 21st 0.4 21.2 low 2%
Paraburdoo Aero 33.9 +0.1 37.9 1st 21.0 +1.1 13.0 21st 16.6 23.5 average 71%
Murchison (district 07A)
Meekatharra Airport 28.8 -0.6 33.7 7th 16.4 -0.7 12.9 14th 28.4 18.9 high 150%
Mount Magnet Aero 29.1 +0.2 34.7 7th 16.5 +0.2 11.7 14th 17.2 17.4 average 99%
Paynes Find 29.1 +0.6 35.1 7th 14.4 +0.2 9.7 27th 6.2 24.2 low 26%
North Coast (district 08)
Dalwallinu 28.2 +1.2 35.5 7th 13.4 +0.3 9.6 27th 0 13.6 lowest 0%
Geraldton Airport 32.3 +3.7 37.9 8th 16.9 +1.5 11.0 27th 0.6 25.3 low 2%
Kalbarri 33.5 +4.0 39.7 17th 18.8 +2.4 14.4 22nd 0.8 18.9 low 4%
Morawa Airport 30.7 +1.8 36.7 7th 15.8 +1.4 11.4 20th 0 17.4 lowest 0%
Mullewa 31.6 +2.8 36.0 7th 17.2 +2.1 12.3 27th 0.9 21.3 low 4%
North Island 27.9 +1.6 31.1 18th 21.2 +0.8 17.4 13th 0 14.3 lowest 0%
Wongan Hills 28.0 +1.6 35.9 7th 13.8 +0.5 9.4 23rd 0 21.8 lowest 0%
Central Coast (district 09)
Badgingarra Research Stn 29.1 +2.0 34.7 6th 15.0 +1.4 9.9 27th 4.8 25.9 low 19%
Bickley 25.7 +2.2 33.8 7th 12.6 0.0 7.8 23rd 4.0 54.5 v low 7%
Garden Island HSF 27.6 +3.8 36.1 7th 16.0 0.0 11.6 27th 1.0 36.8 v low 3%
Gingin Aero 28.9 +2.2 37.6 7th 13.9 +1.9 6.9 27th 18.6 27.5 average 68%
Jandakot Aero 28.2 +2.5 36.5 7th 14.1 +1.6 7.7 27th 9.2 40.9 low 22%
Karnet 25.8 +2.5 33.2 6th 13.2 +1.4 8.2 23rd 0 63.7 lowest 0%
Millendon (Swan Valley) 28.9   37.2 7th 14.8   8.6 27th 0
Pearce RAAF 28.9 +2.4 37.7 7th 15.5 +2.2 8.3 22nd 11.2 33.6 low 33%
Perth Airport 28.9 +3.2 37.1 7th 14.4 +1.4 7.7 23rd 0 39.4 lowest 0%
Perth Metro 28.2 +2.3 36.5 7th 14.4 +0.6 9.9 21st 1.2 35.9 v low 3%
Rottnest Island 25.8 +2.1 32.9 5th 17.5 +0.2 13.2 23rd 0.4 32.6 v low 1%
Swanbourne 27.9 +2.7 36.7 7th 16.0 +0.8 11.1 23rd 1.2 38.6 v low 3%
South Coast (district 09A)
Albany 21.5 +0.6 30.0 20th 14.1 +1.2 10.5 14th 19.0 69.0 v low 28%
Albany Airport 22.9 +0.7 31.7 21st 11.4 -0.4 5.9 21st 22.4 60.6 v low 37%
Bridgetown 25.6 +2.3 32.3 6th 8.2 -1.1 3.2 24th 0.2 49.5 lowest 0%
Bunbury 26.7 +2.6 34.4 6th 12.6 +0.8 7.0 21st 0 39.7 lowest 0%
Busselton Aero 26.4 +2.5 34.2 6th 11.4 +0.3 6.1 27th 0 36.9 lowest 0%
Cape Leeuwin 23.1 +1.8 30.3 20th 16.4 +0.9 13.8 26th 7.4 59.0 v low 13%
Cape Naturaliste 25.8 +3.8 34.1 6th 14.2 +0.3 9.8 24th 4.0 43.8 v low 9%
Collie East 25.9 +2.1 32.6 6th 8.1 -0.9 2.7 21st 0 39.7 lowest 0%
Dwellingup 26.1 +3.6 33.3 6th 10.4 0.0 6.0 21st 0 65.5 lowest 0%
Esperance 22.2 -1.1 29.7 6th 12.3 -1.0 9.0 29th 4.8 43.5 v low 11%
Esperance Aero 22.7 -0.9 29.6 6th 11.7 -1.0 7.2 3rd 7.2 39.0 low 18%
Hopetoun North 21.7 -1.5 29.1 21st 11.7 -1.0 6.5 4th 10.0 37.8 low 26%
Jarrahwood 27.0 +3.2 35.0 6th 9.2 +0.5 1.2 24th 0 48.7 lowest 0%
Mandurah 26.8 +2.7 32.7 7th 16.4 +0.6 11.8 23rd 0.8 38.2 v low 2%
Manjimup 25.1 +3.9 31.3 6th 11.0 +0.2 7.6 29th 6.8 59.3 v low 11%
North Walpole 23.2 +1.8 30.1 19th 12.7 -0.1 10.1 14th 7.4 86.1 lowest 9%
Rocky Gully 23.6 +1.8 30.3 21st 10.7 -0.2 5.0 2nd 1.8 52.3 lowest 3%
Shannon 23.9 +2.6 29.8 5th 10.9 +0.1 6.9 2nd 6.4 69.8 lowest 9%
Windy Harbour 22.4 +0.5 30.0 19th 10.5 -1.7 7.0 14th 4.4 69.7 lowest 6%
Witchcliffe West 25.3   31.5 18th 11.5   7.9 5th 3.2
North Central (district 10)
Cunderdin Airfield 27.2 +0.7 35.3 7th 11.2 -0.7 6.7 28th 0 23.3 lowest 0%
Merredin     31.5 18th 13.7 +0.8 9.0 28th 0 22.8 lowest 0%
Northam 27.4 +1.3 35.6 7th 11.8 -0.2 7.2 21st 0 23.0 lowest 0%
York 27.2 +0.9 35.0 7th 9.3 -1.5 4.8 20th 0 20.6 lowest 0%
South Central (district 10A)
Beverley 27.7 +1.5 35.2 7th 10.5 -0.8 5.4 23rd 0 22.8 lowest 0%
Brookton 26.3 +1.4 33.4 6th 11.1 -0.1 5.4 27th 0 25.6 lowest 0%
Hyden 25.7 +0.1 32.3 7th 10.9 -0.3 7.5 23rd 5.4 23.7 low 23%
Jacup 22.6 -0.4 29.9 21st 10.4 -0.4 5.1 2nd 11.6 40.6 low 29%
Katanning 23.9 +0.7 31.0 6th 10.3 -0.7 6.1 2nd 0.6 28.5 lowest 2%
Lake Grace 24.1 0.0 30.2 6th 11.2 -0.7 7.3 3rd 0 23.1 lowest 0%
Narrogin 24.9 +1.8 32.3 6th 10.0 -0.5 5.5 23rd 0.4 28.9 v low 1%
Newdegate Research Station 23.3 -0.8 28.7 21st 9.5 -0.7 6.7 2nd 3.4 26.0 low 13%
Pingelly 25.2 +1.1 32.0 6th 11.7 +0.1 6.1 23rd 0 26.6 lowest 0%
Ravensthorpe     28.0 5th 9.4 -2.5 4.0 4th 13.8 32.1 average 43%
Wagin 24.3 +0.7 31.7 6th 9.8 -1.0 4.6 29th 0 28.2 lowest 0%
Wandering 25.5 +1.1 32.4 6th 8.2 -1.3 2.8 21st 0 30.4 lowest 0%
Eucla (district 11)
Eucla 21.5 -2.2 30.6 22nd 12.3 -1.1 7.3 8th 9.8 26.1 low 38%
Eyre 22.7 -1.6 29.5 22nd 9.8 -1.9 3.0 21st 13.6 24.5 average 56%
Forrest 24.2 -2.3 29.8 22nd 10.6 -1.5 6.4 21st 0.6 15.2 v low 4%
Red Rocks Point 21.1 -2.8 30.5 22nd 14.1 -0.3 9.2 8th 9.0 21.5 low 42%
South East (district 12)
Bulga Downs 27.3 -1.5 34.0 1st 13.3 -0.9 8.8 27th 16.2 20.1 average 81%
Kalgoorlie-Boulder Airport 23.7 -1.6 30.3 7th 12.1 -0.6 8.5 25th 11.8 20.1 average 59%
Laverton Aero 25.2 -1.9 30.7 7th 13.5 -1.5 9.7 27th 6.2 18.4 low 34%
Leinster Aero 25.9 -2.1 31.5 7th 13.7 -1.6 10.2 27th 17.8 23.7 average 75%
Leonora Aero 25.2 -3.0 30.9 7th 13.4 -1.8 8.5 27th 12.0 14.6 average 82%
Munglinup West 23.3 -0.9 31.0 6th 10.8 -1.3 7.1 23rd 14.8 34.8 low 43%
Norseman Aero 23.8 -1.5 30.9 7th 10.5 -0.5 5.1 3rd 2.4 24.2 v low 10%
Salmon Gums Res.Stn. 23.5 -0.3 30.3 7th 8.0 -2.0 2.0 3rd 2.8 26.8 v low 10%
Southern Cross Airfield 25.8 -0.4 32.8 7th 11.7 -0.1 7.5 22nd 11.8 23.2 low 51%
North East (district 13)
Carnegie 28.9 -1.5 34.7 15th 14.5 -1.7 9.0 22nd 0.7 23.2 low 3%
Giles Meteorological Office 28.3 -1.2 33.4 1st 14.2 -2.3 9.8 19th 0 17.4 lowest 0%
Telfer Aero 33.0 -1.6 37.5 1st 19.7 -1.1 15.2 20th 0 19.2 lowest 0%
Warburton Airfield 27.9 -1.7 32.8 15th 15.2 -0.3 9.7 22nd 0 17.7 lowest 0%
Wiluna Aero 27.6   33.2 16th 15.1   10.6 22nd 29.4
Offshore Islands
Adele Island 31.1   32.7 1st 26.9   24.6 4th
Rowley Shoals 29.6   31.3 3rd 27.7   23.1 9th
Varanus Island 31.8 +0.5 35.3 1st 26.3 +0.1 20.7 11th 40.6 32.5 high 125%

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 at 4 pm on Wednesday 1 May 2024. 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.

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


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