Sunday 3 May 2026 - Monthly Climate Summary for Greater Perth - Product code IDCKGC11L0

Greater Perth in April 2026

Rainfall

  • Rainfall totals for April were around average at most sites across Greater Perth.
  • April rainfall totals ranged from around 50% to around 120% of average across Greater Perth.

Temperature

  • Mean maximum temperatures for April at all sites across Greater Perth were below average.
  • April mean maximum temperatures for Greater Perth ranged from 2.2 °C below average at Swanbourne to 0.2 °C below average at Perth Airport.
  • Swanbourne had its coolest April day (lowest daily maximum temperature) on record.
  • Garden Island HSF and Rottnest Island had their lowest April mean maximum temperature for at least 20 years.
  • Mean minimum temperatures for April at all sites across Greater Perth were below average.
  • April mean minimum temperatures for Greater Perth ranged from 1.0 °C below average at Swanbourne to 0.3 °C below average at Karnet.

Perth Metro

  • Total rainfall for Perth Metro was 37.8 mm, which is 108% of the long-term average of 35.1 mm.
  • The mean daily maximum temperature for Perth Metro was 24.2 °C, which is 1.8 °C below the long-term average of 26.0 °C.
  • The warmest day was 31.3 °C on the 12th, and the coolest day was on the 27th when the temperature reached 17.0 °C.
  • The mean daily minimum temperature for Perth Metro was 13.1 °C, which is 0.7 °C below the long-term average of 13.8 °C.
  • The coldest morning was 7.2 °C on the 22nd, and the warmest morning was on the 3rd when the minimum temperature was 18.1 °C.

Extremes Records Summaries Daily observations Important notes the top

Extremes in April 2026
Hottest day 33.7 °C at Pearce RAAF on the 12th
Warmest days on average 25.6 °C at Pearce RAAF
Coolest days on average 21.8 °C at Rottnest Island
21.8 °C at Bickley
Coldest day 16.0 °C at Bickley on the 6th
Coldest night 5.3 °C at Pearce RAAF on the 25th
Coolest nights on average 11.6 °C at Karnet
Warmest nights on average 16.5 °C at Rottnest Island
Warmest night 19.7 °C at Garden Island HSF on the 5th
Warmest on average overall 19.2 °C at Pearce RAAF
19.2 °C at Rottnest Island
Coolest on average overall 16.9 °C at Karnet
Wettest overall 117.7 mm at Araluen
Wettest day 23.0 mm at Bickley on the 21st
Strongest wind gust 87.0 km/h at Jandakot Aero on the 20th

Extremes Records Summaries Daily observations Important notes the top

Record lowest April daily maximum temperature
New record
(°C)		 Old
record		 Years of
record		 Average for
April
Swanbourne 16.4 on the 27th 16.6 on 19 Apr 2019 33 25.4


Lowest April mean maximum temperature for at least 20 years
Observed
(°C)		 Most recent
higher		 Average for
April
Garden Island HSF 22.1 21.9 in 2006 24.0
Rottnest Island 21.8 21.4 in 2006 23.8

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



Extremes Records Summaries Daily observations Important notes the top

Summary statistics for April 2026
Maximum temperatures
(°C)		 Minimum temperatures
(°C)		 Rainfall
(millimetres)
Mean for
April
2026		 Diff
from
average		 Highest for
April
2026		 Mean for
April
2026		 Diff
from
average		 Lowest for
April
2026		 Total for
April
2026		 Average
for
April		 Rank of
April
2026		 Fraction of
April
average
Bickley 21.8 -1.8 30.0 12th 12.3 -0.4 7.2 22nd 57.2 53.8 average 106%
Garden Island HSF 22.1 -1.9 28.7 3rd 15.1 -0.9 11.7 22nd 26.0 36.2 average 72%
Jandakot Aero 24.0 -1.9 31.0 12th 12.0 -0.6 6.1 22nd 45.2 40.5 average 112%
Karnet 22.1 -1.3 30.0 12th 11.6 -0.3 6.5 22nd 46.7 63.0 average 74%
Mandurah 23.0 -1.2 29.0 3rd 14.9 -0.9 10.9 22nd 17.8 36.9 low 48%
Millendon (Swan Valley) 25.2 33.3 12th 12.3 5.4 25th 24.6
Pearce RAAF 25.6 -0.9 33.7 12th 12.7 -0.7 5.3 25th 20.8 33.4 average 62%
Perth Airport 25.5 -0.2 33.1 12th 12.5 -0.5 6.4 26th 23.2 39.0 average 60%
Perth Metro 24.2 -1.8 31.3 12th 13.1 -0.7 7.2 22nd 37.8 35.1 average 108%
Rottnest Island 21.8 -2.0 25.9 3rd 16.5 -0.8 13.2 21st 37.4 32.1 average 116%
Swanbourne 23.2 -2.2 29.1 3rd 14.3 -1.0 9.2 22nd 30.4 38.0 average 80%

Extremes Records Summaries Daily observations Important notes the top

Daily maximum temperatures for April 2026
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Bickley 21.5 25.7 25.7 25.9 22.7 16.0 22.5 20.0 20.9 22.9 26.5 30.0 27.7 28.1 22.4 25.7 21.3 18.8 20.3 20.6 16.7 20.9 17.9 17.7 20.4 23.2 16.7 16.8 19.7 19.0
Garden Island HSF 22.9 24.4 28.7 23.6 22.3 18.2 20.7 22.1 21.0 25.0 26.0 24.1 21.7 25.0 21.3 23.2 23.3 20.4 22.2 22.8 18.7 22.8 21.2 20.5 21.7 21.6 17.4 20.6 20.4 20.6
Jandakot Aero 24.0 28.4 29.3 27.7 25.2 17.9 24.3 22.3 23.4 25.4 28.7 31.0 26.8 29.9 23.1 26.9 23.4 21.8 22.4 23.1 19.9 23.1 21.3 21.0 22.9 25.9 17.8 20.6 22.6 21.3
Karnet 22.2 25.1 26.5 25.8 22.6 16.1 22.3 21.0 23.5 26.0 30.0 27.4 29.1 22.0 26.0 21.0 19.0 20.2 21.1 16.5 20.5 18.6 18.6 20.1 22.5 19.0 19.2
Mandurah 23.7 27.1 29.0 24.2 19.6 22.8 22.3 22.4 23.6 27.6 27.5 25.0 27.2 23.7 24.1 22.7 21.3 21.9 21.5 18.7 21.1 20.7 20.8 21.7 23.9 17.1 21.1 21.4 21.1
Millendon (Swan Valley) 25.0 28.9 29.3 29.2 26.3 21.3 25.4 23.7 24.5 26.3 29.9 33.3 29.9 31.3 26.2 29.9 24.2 22.3 23.4 24.4 20.1 24.4 21.7 21.5 23.7 26.3 19.3 20.5 23.3 21.8
Pearce RAAF 25.7 29.1 30.0 29.7 26.2 22.3 25.0 24.4 24.8 26.5 30.1 33.7 32.1 28.1 29.9 25.0 22.5 24.9 20.0 25.3 21.8 21.3 24.0 27.2 20.8 20.6 23.8 21.7
Perth Airport 25.5 29.6 29.8 30.1 27.0 20.4 26.0 24.4 26.1 26.1 29.4 33.1 29.3 31.6 24.9 29.5 24.4 23.5 24.4 24.0 21.2 24.6 21.3 22.1 24.3 26.4 17.4 20.3 23.9 23.2
Perth Metro 24.1 28.4 29.0 28.0 24.8 18.6 24.1 22.4 23.8 26.1 28.5 31.3 27.3 30.3 23.2 27.5 23.9 21.9 22.8 23.2 20.0 24.0 21.2 20.9 22.9 26.3 17.0 20.6 23.0 21.4
Rottnest Island 22.5 23.8 25.9 24.8 23.2 17.7 21.1 22.2 21.5 22.4 24.3 25.2 22.4 23.6 20.9 22.7 22.7 20.1 21.1 22.1 18.0 22.8 21.5 20.8 20.8 21.8 17.3 20.2 20.2 21.5
Swanbourne 22.8 26.7 29.1 24.5 24.0 17.5 22.2 22.1 22.4 25.8 28.1 28.1 23.4 28.0 22.7 24.7 23.5 21.2 22.5 22.6 19.6 23.2 20.9 20.9 22.2 24.6 16.4 21.6 22.2 21.4
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period		 -10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period
Daily minimum temperatures for April 2026
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Bickley 11.0 12.1 14.6 14.6 15.6 12.7 12.0 10.2 12.2 10.5 10.0 14.6 17.3 13.3 16.8 13.6 14.6 11.0 10.6 11.4 9.4 7.2 11.9 10.5 10.9 10.4 12.0 12.2 14.0 11.5
Garden Island HSF 13.8 15.9 18.4 16.8 19.7 16.4 14.4 13.1 13.5 14.6 15.0 14.6 17.1 16.7 17.7 15.3 13.3 16.7 12.3 12.0 13.9 11.7 16.4 15.1 12.4 14.7 15.4 14.8 15.9 15.5
Jandakot Aero 9.1 13.6 17.9 17.0 13.7 15.8 11.4 8.4 11.8 13.8 11.9 12.3 12.7 16.4 16.1 13.0 12.9 12.0 7.6 8.9 13.5 6.1 10.7 9.4 6.7 6.5 15.0 13.0 11.6 10.7
Karnet 8.7 12.9 15.7 14.1 15.8 13.0 11.1 11.8 11.3 11.4 12.0 12.3 13.8 15.4 13.6 14.1 10.0 7.5 8.2 9.5 6.5 10.6 8.5 8.0 9.2 14.5 12.5
Mandurah 13.3 16.1 18.7 17.9 16.2 14.0 12.7 14.7 14.3 14.2 15.7 16.1 16.5 17.1 15.1 17.1 15.2 13.6 13.3 13.1 10.9 16.1 13.8 13.0 13.6 15.5 14.5 16.3 14.2
Millendon (Swan Valley) 8.9 12.9 16.6 17.7 15.6 13.8 14.6 8.4 11.5 13.3 14.4 12.5 12.5 14.9 15.6 14.9 13.3 13.5 9.5 8.2 12.5 6.5 9.7 10.0 5.4 7.9 14.4 14.6 14.3 10.5
Pearce RAAF 8.6 13.0 16.8 16.9 15.0 15.2 14.0 8.8 11.8 14.4 15.7 15.1 15.2 16.2 15.3 13.5 15.5 10.1 12.7 6.6 10.4 10.9 5.3 8.8 15.4 14.8 14.2 10.9
Perth Airport 9.4 13.9 17.8 16.7 14.1 14.7 14.1 7.8 11.9 14.1 14.2 12.4 12.3 16.4 15.6 15.2 15.5 12.2 9.1 8.5 14.0 7.6 11.6 10.4 6.4 6.4 14.6 13.0 13.8 10.7
Perth Metro 9.8 15.4 18.1 17.0 15.0 15.8 13.7 9.8 13.6 14.1 13.9 12.9 15.7 16.9 17.0 13.1 14.2 13.7 10.1 9.6 14.1 7.2 11.9 11.1 7.7 7.5 15.1 13.2 12.9 12.0
Rottnest Island 15.5 16.5 18.5 18.9 19.2 16.5 15.2 15.4 16.8 15.0 16.3 18.4 19.1 17.6 18.5 16.4 18.5 16.8 15.3 16.4 13.2 14.0 15.8 15.5 16.3 15.3 15.6 15.3 16.2 16.7
Swanbourne 11.8 14.8 18.0 16.6 17.5 15.2 12.8 12.3 14.9 14.3 15.3 15.8 16.6 16.5 17.3 14.9 16.4 15.5 11.6 12.2 13.5 9.2 15.8 12.7 10.9 10.5 14.9 13.6 14.2 13.8
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period		 -10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period
Daily rainfall for April 2026
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Anketell - - - - - - 2.8 - 0.4 - - - - - 9.9 0.2 - 6.0 0.1 - 5.1 0.1 3.8 1.6 0.4 - 2.1 8.3 0.2 -
Araluen - - - - → → 1.7 - - - - - - - 8.3 4.5 - → → 67.3 20.5 - 4.0 1.2 → → → 10.2 -
Bickley - - - - - - - - - - - - - 1.0 1.0 - 14.2 - - 23.0 - 6.0 1.0 0.6 0.2 2.4 7.6 - 0.2
Bungendore - - - - - - - - - - - - - - - - - 12.0 - - 9.8 0.2 3.2 2.4 - - 1.6 6.2 - -
Chidlow - - - - - - - - - - - - - - 2.0 - - 5.0 - - 7.2 - 4.0 - - → → 7.4 0.1
Garden Island HSF - - - - - - 3.0 - 1.2 - - - - - 1.4 0.2 - 5.0 - - 3.0 - 1.0 0.8 1.0 - 4.0 5.2 0.2 -
Gidgegannup 0.2 - - - - - - - - - - - - - 1.0 - - 6.8 0.2 - 11.0 0.2 4.6 1.2 0.2 0.2 2.4 5.2 - 0.2
Huntly - - - - - - 1.0 - - - - - - - 0.5 - - 11.4 - - 15.2 - 9.6 1.0 0.8 0.1 5.2
Jandakot Aero - - - - - - 3.0 - - - - - - - 16.2 2.4 - 6.8 - - 4.8 - 1.6 1.6 - - 1.8 7.0 - -
Jarrahdale 0.2 - - - - - 3.4 0.2 - - - - - - 4.2 0.2 1.0 13.8 - - 11.8 0.2 5.4 0.4 1.0 0.2 2.2 6.6 - 0.2
Karnet - - - - - - 1.4 - - - - - - - 3.0 1.6 - 10.0 - - 15.1 - 6.2 0.4 - - 1.6 7.4 - -
Karragullen North - - - - - - 1.2 - - - - - - - 19.8 4.0 - 10.2 - - 16.2 - 7.8 1.0 - - 2.2 8.4 - 0.2
Maida Vale - - - - - - - - - - - - - - 1.4 0.6 - 13.2 - - 8.2 - 2.4 0.2 - - 2.0 7.4 - -
Mandurah - - - - - - 0.2 - 0.4 - - - - - - 1.2 - 6.2 - - 2.8 - 2.0 0.8 - - 2.4 1.8 - -
Millendon (Swan Valley) - - - - - - - - - - - - - - 1.6 0.2 - 8.6 - - 5.0 - 3.6 0.2 0.2 - 1.8 3.2 - 0.2
Mount Solus 0.4 - 0.2 - - - 3.0 - - - - - - - 6.8 0.8 0.2 8.6 - - 12.2 0.2 4.6 0.2 0.2 0.2 1.4 8.0 0.2 0.2
Muchea - - - - - - - - - - - - - - 13.0 - - 3.6 - - 4.4 - 2.2 - - - 2.6 3.6 2.0 -
Mundaring - - - - - - - - - - - - - - - - - 13.2 - - 11.6 - → 6.4 - - 2.8 4.4 - -
Pearce RAAF - - - - - - - - - - - - - - 1.0 - - 6.2 - - 3.8 - 3.2 - 0.2 - 2.2 3.6 0.4 0.2
Perth Airport - - - - - - - - - - - - - - 0.6 0.2 - 7.0 0.4 - 4.8 - 2.4 0.6 - - 1.2 6.0 - -
Perth Metro - - - - - - - - - - - - - - 11.6 1.0 - 8.0 - - 3.8 0.2 1.8 1.6 0.2 - 1.6 8.0 - -
Pinjarra South - - - - - - 0.4 - - - - - - - - 0.4 - 3.8 - - 5.8 - 3.2 2.4 0.2 - 1.6 4.8 - -
Roleystone - - - - - - - - 0.2 - - - - - 6.2 2.6 - 11.8 - - 9.8 - 5.4 - - - 6.0
Rottnest Island - - - - 0.2 - 2.2 - - - - - - - 13.4 4.2 - 2.0 - - 2.4 - 0.4 0.2 - - 4.4 8.0 - -
Serpentine - - - - - - - - - - - - 0.8 - - 1.2 -
Swanbourne 0.2 - - - - - 0.6 - - - - - - - 5.0 1.6 - 3.6 - - 2.8 - 1.4 1.0 - 0.2 1.4 12.2 0.2 0.2
Tamala Park (Mindarie) - - - - - - - - - - - - - - 0.2 0.2 - 4.6 - - 1.9 0.2 2.0 0.7 - - - 6.0 -
Wanneroo - - - - - - - - - - - - - - 2.0 - - - - - 8.8 - 2.8 2.2 - - - 8.0 - -
Werribee - 0.2 - - - - - - - - - - - - 9.0 0.2 - 3.8 - - 5.6 - 3.2 0.4 0.2 - 2.0 3.4 0.4 -
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount		 0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

Extremes Records Summaries Daily observations Important notes the top

Notes

The Monthly climate summary, usually published in the first week of the following month, lists the main features of the weather in Greater Perth using the most timely and accurate information available on the date of publication; it will generally not be updated.

This summary includes data from observing sites in or near the Greater Perth “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to represent a socio-economic definition of each capital city. This means the greater capital city boundary includes people who regularly socialise, shop or work within the capital city, but live in the small towns and rural areas surrounding the capital city. It does not define the built up edge of the capital city.

This statement has been prepared based on information available on Sunday 3 May 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.

Creative Commons By Attribution logo Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence

Climate