Swanbourne Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
29.8 30.5 28.8 25.3 22.2 19.4 18.5 18.9 20.0 22.3 25.4 28.1 24.0
Mean Min (°C)
18.3 18.8 17.6 15.2 12.6 10.7 9.9 10.2 11.1 12.5 14.8 16.8 14.0
Mean Rain (mm)
16.8 12.1 21.3 37.5 87.7 128.1 151.1 116.7 76.8 42.2 23.2 9.9 730.4
Median Rain (mm)
1.2 1.7 12.2 29.2 81.2 126.2 144.4 122.6 80.2 32.4 21.7 5.1 742.4
Mean Rain Days
2.4 2.1 4.0 7.2 11.8 16.6 18.8 17.4 14.8 8.8 5.3 3.3 112.9

Swanbourne Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.3 43.0 42.8 37.3 31.5 26.2 25.9 30.2 34.7 37.1 41.1 43.7 44.3
Low Max (°C)
19.5 17.1 18.4 16.6 13.2 12.5 12.2 11.6 13.2 15.8 16.0 19.3 11.6
High Min (°C)
28.4 28.7 28.8 23.9 20.2 17.1 16.0 17.3 19.0 21.1 25.6 27.2 28.8
Low Min (°C)
4.7 7.3 7.5 3.0 4.8 2.9 2.4 3.1 3.1 2.0 4.3 5.7 2.0
High Rain (mm)
138.6 97.4 51.8 64.0 62.2 76.0 75.0 82.0 45.0 76.0 35.2 30.2 138.6

Swanbourne Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
33.1 34.0 31.2 27.9 24.6 21.2 19.5 21.5 22.3 25.0 29.0 30.5 25.4
Low Mn. Max (°C)
27.6 27.8 26.1 23.0 20.5 17.1 16.7 17.4 17.7 19.8 22.7 22.8 22.8
High Mn. Min (°C)
20.4 21.0 19.1 17.7 15.1 12.8 11.8 12.6 13.1 14.6 17.6 19.5 14.9
Low Mn. Min (°C)
16.4 17.0 16.1 12.9 10.8 9.0 7.6 8.2 9.0 10.2 12.6 14.5 12.9
High Rain (mm)
145.8 141.8 82.4 146.4 211.6 259.8 285.4 209.4 160.8 129.4 77.0 67.0 951.8
Low Rain (mm)
0.0 0.0 0.0 0.4 15.2 23.2 42.0 31.0 18.0 5.0 1.0 0.0 497.8

Swanbourne Annual Temperatures & Rainfall

Swanbourne annual climate

Swanbourne Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.7 0.7 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 2.2
≥ 35°C
5.0 5.6 2.7 0.3 0.0 0.0 0.0 0.0 0.0 0.3 1.5 3.9 19.1
≥ 30°C
13.5 14.0 11.2 3.2 0.2 0.0 0.0 0.0 0.2 1.9 4.9 9.5 58.5
≤ 2°C
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
≤ 0°C
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0

Swanbourne 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
35.0 35.9 33.8 29.1 25.0 21.4 20.2 20.6 21.9 25.4 30.0 34.2 30.3
Low Max
24.8 24.9 24.2 21.6 19.1 17.1 16.3 16.6 17.4 18.8 21.1 22.8 18.2
High Min
21.0 21.6 20.8 18.2 16.0 13.8 13.0 13.0 13.9 15.1 17.5 19.6 18.5
Low Min
15.1 15.1 13.9 11.8 9.3 7.5 6.2 6.8 7.9 9.0 11.5 13.2 9.0

Swanbourne Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
31 31 31 31 31 31 31 31 31 31 31 31 30.0
Earliest Entry
1994 1994 1994 1994 1994 1994 1994 1994 1993 1993 1993 1993 1993
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2023 2023 2024
Years of Maxima
31 31 31 31 30 31 31 31 31 31 31 31 30.0
Earliest Entry
1994 1994 1994 1994 1994 1994 1994 1994 1993 1993 1993 1993 1993
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2023 2023 2024
Years of Rainfall
31 31 31 31 31 31 31 31 31 30 31 31 30.0
Earliest Entry
1994 1994 1994 1994 1994 1994 1994 1994 1994 1994 1993 1993 1993
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2024 2024 2024 2023 2023 2024

Station Details

SWANBOURNE
Perth, Western Australia
31.9560°S 115.7619°E 41m AMSL
Commenced 1985

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