Greater Perth in April 2025

Rainfall

  • Rainfall totals for April were below average at all sites across Greater Perth. The lowest April rainfall total was 5.8 mm at Perth Airport and the highest total was 33 mm at Jarrahdale.
  • April rainfall totals ranged from 15–56% of average across Greater Perth.
  • During the first three weeks of April, a number of troughs followed by a cold front brought thunderstorms and showers across Greater Perth, although daily rainfall totals were mostly light (below 10 mm).
  • Several moderate daily rainfall totals of 10–20 mm were recorded in and around the Perth Hills on the 14th and the 23rd.

Temperature

  • Mean maximum temperatures for April at all sites across Greater Perth were above average.
  • April mean maximum temperatures for Greater Perth ranged from 0.8 °C above average at Perth Metro and at coastal and offshore islands locations to 1.9 °C above average at Perth Airport.
  • Mean minimum temperatures for April at all sites across Greater Perth were above average.
  • April mean minimum temperatures for Greater Perth ranged from 0.4 °C above average at Swanbourne to 1.4 °C above average at Karnet.
  • Perth Metro recorded three days with maximum temperatures at or above 32 °C on the 1st, 11th and 22nd, which was above its April average (2 days at or above 32 °C).

Perth Metro

  • Total rainfall for Perth Metro was 9.2 mm, which is 26% of the long-term average of 35.9 mm.
  • The mean daily maximum temperature for Perth Metro was 26.8 °C, which is 0.8 °C above the long-term average of 26.0 °C.
  • The warmest day was 34.2 °C on the 11th, and the coolest day was on the 24th when the temperature reached 21.4 °C.
  • The mean daily minimum temperature for Perth Metro was 14.8 °C, which is 1.0 °C above the long-term average of 13.8 °C.
  • The coldest morning was 7.2 °C on the 25th, and the warmest morning was on the 22nd when the minimum temperature was 20.2 °C.

Extremes in April 2025
Hottest day 36.3 °C at Pearce RAAF on the 11th
Warmest days on average 27.9 °C at Pearce RAAF
Coolest days on average 24.5 °C at Bickley
Coldest day 18.1 °C at Bickley on the 24th
Coldest night 4.4 °C at Jandakot Aero on the 25th
Coolest nights on average 13.2 °C at Bickley
Warmest nights on average 17.9 °C at Rottnest Island
Warmest night 22.0 °C at Rottnest Island on the 1st
Warmest on average overall 21.2 °C at Rottnest Island
21.2 °C at Pearce RAAF
Coolest on average overall 18.8 °C at Bickley
Wettest overall 33.0 mm at Jarrahdale
Wettest day 20.4 mm at Jarrahdale on the 14th
Strongest wind gust 91.0 km/h at Perth Airport on the 4th


Summary statistics for April 2025
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2025
Diff
from
average
Highest for
April
2025
Mean for
April
2025
Diff
from
average
Lowest for
April
2025
Total for
April
2025
Average
for
April
Rank of
April
2025
Fraction of
April
average
Bickley 24.5 +1.0 32.5 11th 13.2 +0.6 7.6 19th 16.0 54.5 low 29%
Garden Island HSF 25.0 +1.0 30.0 21st 16.6 +0.6 12.3 25th 20.8 36.8 low 56%
Jandakot Aero 26.9 +1.1 33.5 11th 13.8 +1.2 4.4 25th 19.0 40.9 average 46%
Karnet 24.8 +1.5 33.0 11th 13.3 +1.4 6.7 25th 22.9 63.7 low 36%
Mandurah 25.0 +0.8 29.9 1st 16.4 +0.6 10.9 19th 7.6 38.2 low 20%
Millendon (Swan Valley) 27.7 36.1 11th 14.3 6.3 27th 12.0
Pearce RAAF 27.9 +1.4 36.3 11th 14.6 +1.2 7.0 27th 15.4 33.6 low 46%
Perth Airport 27.6 +1.9 35.3 11th 14.1 +1.1 4.5 25th 5.8 39.4 low 15%
Perth Metro 26.8 +0.8 34.2 11th 14.8 +1.0 7.2 25th 9.2 35.9 low 26%
Rottnest Island 24.6 +0.8 28.7 11th 17.9 +0.6 13.4 19th 16.6 32.6 average 51%
Swanbourne 26.1 +0.8 31.5 11th 15.7 +0.4 9.6 25th 20.6 38.6 average 53%

Daily maximum temperatures for April 2025
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 30.6 27.4 26.5 18.6 24.5 28.4 26.6 26.3 24.3 27.5 32.5 27.3 26.0 23.2 24.1 25.5 24.7 19.8 19.6 21.5 25.5 31.5 23.1 18.1 20.0 20.0 21.0 21.3 22.8 25.6
Garden Island HSF 27.7 29.6 29.0 26.2 29.7 26.6 26.8 25.2 22.7 25.4 29.1 23.4 26.5 22.9 23.6 22.8 22.2 20.7 22.8 24.3 30.0 28.7 25.0 19.8 21.0 20.8 21.0 21.2 25.5 28.4
Jandakot Aero 32.2 30.4 29.1 24.3 29.2 29.9 27.6 27.2 26.0 29.5 33.5 28.0 28.5 24.7 26.1 28.0 26.9 22.7 22.5 24.7 29.7 32.1 26.8 21.4 22.5 22.6 23.4 24.4 25.4 28.6
Karnet 30.5 26.1 24.4 19.4 25.6 28.7 27.0 26.8 24.0 27.2 33.0 24.9 23.2 23.5 25.0 21.6 27.8 30.2 23.5 18.5 18.6 20.4 20.8 22.7 26.6
Mandurah 29.9 28.4 27.0 22.1 28.7 26.5 26.2 25.7 24.3 26.5 28.2 26.3 27.7 23.9 24.7 25.6 24.5 21.5 21.6 23.6 28.9 25.8 24.6 20.4 20.9 21.2 21.6 22.9 23.8 26.3
Millendon (Swan Valley) 33.7 30.7 31.1 22.9 26.6 31.4 30.1 29.7 27.5 30.9 36.1 29.7 28.2 27.1 27.1 29.2 28.4 23.3 22.4 24.5 28.3 34.7 27.2 22.4 22.6 22.9 23.7 24.6 25.9
Pearce RAAF 34.2 31.6 31.5 23.7 26.8 32.3 30.4 29.8 27.7 31.3 36.3 29.0 28.5 26.9 27.0 29.5 28.4 23.4 22.6 24.8 27.8 35.1 27.0 22.1 22.3 22.4 23.7 24.4 26.3 29.4
Perth Airport 33.9 30.3 29.7 22.6 27.6 30.4 29.3 28.6 27.5 30.6 35.3 28.4 29.4 26.0 26.9 29.2 28.2 23.5 22.7 24.9 28.7 33.8 23.0 23.2 23.6 24.5 24.8 26.0 29.0
Perth Metro 32.0 30.0 30.0 23.4 27.7 30.5 28.2 27.4 25.6 28.8 34.2 27.4 28.3 25.0 25.9 27.5 26.1 22.0 22.3 24.4 28.2 32.7 27.0 21.4 22.6 22.6 23.4 24.5 25.5 28.5
Rottnest Island 27.4 27.4 28.3 23.7 27.3 27.9 26.5 25.1 23.9 24.9 28.7 24.3 25.6 23.5 23.2 24.0 23.4 20.7 20.2 22.4 27.8 27.9 26.8 19.6 20.0 21.0 21.2 21.6 24.8 27.9
Swanbourne 29.8 30.7 30.4 23.9 29.2 27.5 26.9 26.1 24.7 27.3 31.5 25.3 28.1 23.6 25.3 26.7 25.4 22.3 22.4 24.4 29.3 29.8 25.6 21.0 22.7 22.6 21.9 23.9 26.2 28.8
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 2025
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 17.5 16.2 13.4 15.4 13.9 14.6 17.6 17.5 15.5 12.6 14.9 18.4 16.4 14.5 12.4 12.0 13.5 9.4 7.6 9.6 11.3 16.0 16.5 11.4 8.3 9.2 9.2 10.0 9.4 10.9
Garden Island HSF 17.5 19.2 18.5 17.9 18.2 18.7 15.9 21.5 18.8 16.3 18.5 20.8 19.3 15.9 15.9 15.7 17.3 13.8 12.3 13.9 16.4 21.1 17.6 15.7 12.3 12.7 13.6 13.4 14.1 14.2
Jandakot Aero 15.3 19.4 17.3 17.9 17.6 17.6 14.4 15.4 17.0 13.0 16.9 17.8 17.9 14.4 11.5 11.4 15.0 9.1 6.9 11.7 13.6 20.8 18.0 13.8 4.4 6.6 7.1 10.7 10.0 11.3
Karnet 17.5 16.5 14.5 15.0 14.4 16.0 15.6 16.8 15.7 13.0 16.9 17.5 14.7 11.6 12.0 9.1 12.5 14.9 16.5 12.0 6.7 8.0 8.6 10.5 12.0
Mandurah 20.2 19.3 17.9 17.8 17.6 18.6 17.9 19.3 17.3 15.2 19.6 19.7 19.5 16.8 15.0 15.2 16.3 13.2 10.9 13.8 15.3 20.9 19.8 15.2 11.4 12.1 14.2 14.0 13.5 15.3
Millendon (Swan Valley) 18.3 19.6 18.1 19.6 17.5 19.3 14.0 15.9 15.4 13.5 16.5 17.1 17.9 15.6 12.0 11.5 17.0 8.4 10.0 11.7 15.1 21.3 17.8 13.5 6.8 8.5 6.3 10.1 8.1
Pearce RAAF 21.3 19.9 19.5 18.8 18.2 18.8 14.6 16.3 14.8 13.6 17.4 17.0 17.6 16.2 10.6 12.1 15.8 10.1 10.5 8.9 17.3 20.1 18.7 13.4 7.1 8.9 7.0 10.5 9.5 12.9
Perth Airport 19.0 19.2 17.2 19.3 17.9 18.3 13.9 15.8 17.4 13.0 16.0 17.9 18.0 15.1 10.9 11.1 16.5 9.3 11.1 12.3 12.9 20.0 13.0 4.5 8.2 6.4 9.3 11.6 13.8
Perth Metro 16.9 19.4 17.7 19.6 18.1 18.2 15.8 17.1 18.4 15.0 17.4 18.8 18.3 16.2 13.1 12.5 16.9 11.1 8.9 10.8 14.5 20.2 19.0 14.1 7.2 8.4 7.3 11.3 9.7 12.3
Rottnest Island 22.0 19.6 19.5 19.2 18.0 19.4 20.8 21.2 19.8 17.4 19.3 20.9 19.6 15.7 17.2 17.3 19.2 15.0 13.4 14.9 17.0 20.1 20.4 15.5 14.2 14.8 15.5 15.4 15.6 17.7
Swanbourne 20.3 19.4 18.4 19.7 18.3 17.6 17.3 19.4 18.6 14.4 18.0 18.9 18.1 16.0 14.3 12.9 15.9 11.9 10.2 12.6 15.7 20.4 19.2 13.9 9.6 11.4 10.8 11.7 11.6 14.4
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 2025
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 - - - 1.2 0.8 - - - - - - 1.2 - 11.1 - - - - - - - 0.1 1.6 2.1 0.1 - - - - -
Araluen - - - 1.5 - - 2.8 - - - - - - 10.8 - - - - - - - - - 4.0
Bickley - - - - 2.4 0.6 - - - - - 1.6 0.2 2.0 0.2 - - - - - - - 5.8 3.0 - 0.2 - - - -
Bungendore - - - 0.2 1.2 - - - - - - 1.8 - 17.8 0.2 - - - - - - - 0.6 2.8 - 0.2 - - - -
Chidlow - - - 0.2 2.8 - - - - - - 0.6 → 1.8 - - - - - → → 1.0 7.0 1.4
Garden Island HSF - - - 2.6 - - - - - - - - - 7.6 0.2 - - - - - 2.8 7.6 - - - - - -
Gidgegannup - - - 0.4 1.2 1.6 - - - - - 0.4 - 2.0 0.2 - - - - - - 1.4 6.4 1.4 - - - - - -
Huntly - - - 7.4 3.2 - - - - - - - - - - - - - - - - - 3.2 1.4 - - - - -
Jandakot Aero - - - - 0.4 - - - - - - 1.0 - 13.8 - - - - - - - - 2.2 1.6 - - - - - -
Jarrahdale - - - 5.2 1.2 - - - - 0.2 - 1.2 - 20.4 0.2 0.2 - - - - - - 1.6 2.2 0.2 - 0.2 - 0.2 -
Karnet - - - 6.8 1.6 - - - - - - 0.8 - 9.8 - - - - - - - 0.2 3.6 0.1 - - - - -
Karragullen North - - - - 2.4 - - - - - - 2.8 - 5.8 - - - - - - - 0.4 0.6 3.2
Maida Vale - - - - - - - - - - - 2.8 - 2.2 - - - - - - - - - 1.8
Mandurah - - - 2.0 0.2 - - - - - - 0.2 - 0.6 - - - - - - - - 0.4 4.2 - - - - - -
Millendon (Swan Valley) - - - - 0.8 - - - - - - 0.6 - 2.4 - - - - - 0.2 7.6 0.4 - - - - - -
Mount Solus - - - 7.0 2.8 - - - - 0.2 - 1.4 - 13.8 - 0.2 - - - - - - 1.6 3.0 - - - 0.2 - -
Muchea - - - - - - - - - - - 1.0 - 7.8 - - - - - - - - 8.0 1.2 - - - - - -
Mundaring - - - - 1.4 1.6 - - - - - 1.6 - 1.0 - - - - - - - - 13.0
Pearce RAAF - - - 0.4 0.2 - - - - - - 0.8 0.2 1.4 0.2 - - - - - - 0.2 11.6 0.4 - - - - - -
Perth Airport - - - - 1.0 - - - - - - 1.6 - 2.6 - - - - - - - - 0.6 - - - - - -
Perth Metro - - - - 0.8 - - - - - - 1.4 0.2 4.0 - - - - - - - - 0.6 2.2 - - - - - -
Pinjarra South - - - 0.6 0.2 - - - - - - - - 0.8 - - - - - - - - 0.8 2.0 - - - - - -
Roleystone - - - - - - - - - - - 4.8 - 9.2 - - - - - - - - 2.6
Rottnest Island - - - 0.2 0.4 0.2 - - - - - - - 12.4 0.2 - - - - - - - 0.8 2.4 - - - - - -
Serpentine - - - 4.2 0.6 - - - - - - 1.0 - 9.8 - - - - - - - - 0.4 0.8 - - - - - -
Swanbourne - - - - 1.2 - - - - - - 2.0 0.2 9.8 0.2 - - - - - - 0.2 4.2 2.8 - - - - - -
Tamala Park (Mindarie) - - - - - - - - - - - - - 9.4 - - - - - - - 0.1 0.8 4.3
Werribee - - - 0.2 2.8 1.4 0.2 - - - - 0.4 - 2.4 - - - - - - - 2.6 3.8 3.2 - - - - - -
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

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 Monday 5 May 2025. 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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