Monday 2 March 2026 - Seasonal Climate Summary for Greater Perth - Product code IDCKGC21L0

Greater Perth in summer 2026

Rainfall

  • Rainfall totals for summer were below to close to average at all sites across Greater Perth.
  • Summer rainfall totals ranged from around 7% to around 70% of average across Greater Perth.

Temperature

  • Mean maximum temperatures for summer at all sites across Greater Perth were above average.
  • Summer mean maximum temperatures for Greater Perth ranged from 0.1 °C above average at Swanbourne to 2.5 °C above average at Perth Airport.
  • Mean minimum temperatures for summer at most sites across Greater Perth were above average.
  • Summer mean minimum temperatures for Greater Perth ranged from 0.1 °C below average at Bickley to 0.9 °C above average at Pearce RAAF and at Perth Airport.

Perth Metro

  • Total rainfall for Perth Metro was 23.4 mm, which is 62% of the long-term average of 38.0 mm.
  • The mean daily maximum temperature for Perth Metro was 31.6 °C, which is 0.6 °C above the long-term average of 31.0 °C.
  • The warmest day was 42.1 °C on 25 December 2025, and the coolest day was on 27 December 2025 when the temperature reached 23.5 °C.
  • The mean daily minimum temperature for Perth Metro was 18.0 °C, which is 0.2 °C above the long-term average of 17.8 °C.
  • The coldest morning was 11.7 °C on 27 December 2025, and the warmest morning was on 2 February 2026 when the minimum temperature was 24.8 °C.

Extremes Records Summaries Important notes the top

Extremes in summer 2026
Hottest day 43.0 °C at Perth Airport on 25 Dec 2025
43.0 °C at Pearce RAAF on 25 Dec 2025
Warmest days on average 33.9 °C at Pearce RAAF
Coolest days on average 26.7 °C at Rottnest Island
Coldest day 20.5 °C at Karnet on 26 Jan 2026
Coldest night 7.3 °C at Jandakot Aero on 27 Dec 2025
Coolest nights on average 15.1 °C at Bickley
Warmest nights on average 19.0 °C at Rottnest Island
Warmest night 28.3 °C at Pearce RAAF on 22 Jan 2026
Warmest on average overall 25.6 °C at Pearce RAAF
Coolest on average overall 22.8 °C at Rottnest Island
Wettest overall 53.6 mm at Mundaring
Wettest day 40.6 mm at Mundaring on 15 Dec 2025
Strongest wind gust 100.0 km/h at Perth Airport on 14 Dec 2025

Extremes Records Summaries Important notes the top

Extremes Records Summaries Important notes the top

Summary statistics for summer 2026
Maximum temperatures
(°C)		 Minimum temperatures
(°C)		 Rainfall
(millimetres)
Mean for
Summer
2026		 Diff
from
average		 Highest for
Summer
2026		 Mean for
Summer
2026		 Diff
from
average		 Lowest for
Summer
2026		 Total for
Summer
2026		 Average
for
Summer		 Rank of
Summer
2026		 Fraction of
Summer
average
Bickley 30.8 +0.8 39.4 25 Dec 2025 15.1 -0.1 8.6 27 Dec 2025 24.4 53.4 average 46%
Garden Island HSF 27.6 +0.3 41.8 25 Dec 2025 18.7 +0.1 13.9 21 Dec 2025 7.2 35.2 average 20%
Jandakot Aero 32.0 +1.1 42.3 25 Dec 2025 17.1 +0.7 7.3 27 Dec 2025 11.4 42.2 average 27%
Karnet 39.1 25 Dec 2025 15.4 +0.4 9.5 27 Dec 2025 14.2 54.9 low 26%
Mandurah 30.2 +1.2 40.1 14 Dec 2025 18.8 +0.2 13.7 22 Feb 2026 2.8 38.9 low 7%
Millendon (Swan Valley) 33.5 42.6 2 Feb 2026 17.2 10.4 4 Dec 2025 10.0
Pearce RAAF 34.0 +1.4 43.0 25 Dec 2025 17.4 +0.9 9.5 27 Jan 2026 21.4 30.5 average 70%
Perth Airport 33.6 +2.5 43.0 25 Dec 2025 17.5 +0.9 8.4 27 Dec 2025 23.8 35.4 average 67%
Perth Metro 31.6 +0.6 42.1 25 Dec 2025 18.0 +0.2 11.7 27 Dec 2025 23.4 38.0 average 62%
Rottnest Island 26.7 +0.3 40.9 25 Dec 2025 19.0 +0.2 14.6 21 Dec 2025 3.8 34.3 low 11%
Swanbourne 29.6 +0.1 41.6 25 Dec 2025 18.3 +0.3 12.7 27 Dec 2025 8.4 37.2 average 23%

Extremes Records Summaries Important notes the top

Notes

The Seasonal 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 2 March 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

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