Rocky Gully Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
27.5 27.4 25.1 21.8 18.5 15.6 14.7 15.4 16.7 19.3 22.9 25.7 20.9
Mean Min (°C)
12.7 13.3 12.6 10.9 9.1 7.6 6.5 6.7 7.2 8.1 9.8 11.1 9.6
Mean Rain (mm)
19.7 18.6 35.5 55.9 76.5 128.6 113.9 103.2 92.2 56.7 41.4 26.9 738.9
Median Rain (mm)
6.7 7.4 28.2 35.0 74.6 100.6 95.2 100.7 94.1 46.9 28.4 17.2 686.8
Mean Rain Days
7.4 6.8 10.4 14.0 17.4 20.7 22.2 21.7 20.0 16.3 12.0 7.9 171.8

Rocky Gully Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
43.1 43.3 40.7 35.0 29.1 22.7 21.5 24.6 27.4 34.0 38.1 41.8 43.3
Low Max (°C)
15.9 15.6 11.6 9.2 10.3 8.1 8.8 7.3 9.7 11.1 12.5 14.9 7.3
High Min (°C)
22.9 23.9 23.8 18.8 17.8 13.4 13.4 14.3 16.2 18.0 20.1 20.6 23.9
Low Min (°C)
3.2 5.3 4.2 2.7 1.2 -1.6 -0.4 -0.4 0.1 0.9 0.5 3.0 -1.6
High Rain (mm)
36.6 56.6 44.2 84.2 36.0 478.4 55.2 45.4 36.8 47.6 51.8 46.0 478.4

Rocky Gully Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
29.5 30.1 27.2 24.6 20.4 17.4 15.5 17.3 19.1 23.5 25.4 30.7 22.0
Low Mn. Max (°C)
24.2 25.0 22.4 18.5 16.7 13.6 13.5 13.8 14.1 16.6 19.2 22.3 19.9
High Mn. Min (°C)
14.9 15.3 14.9 13.3 11.7 8.7 7.7 8.3 8.8 10.3 12.0 12.7 10.3
Low Mn. Min (°C)
10.9 11.7 11.4 9.6 7.4 5.9 4.8 5.0 5.2 6.4 8.0 9.3 9.0
High Rain (mm)
107.6 87.0 113.4 203.0 155.2 821.0 192.0 169.6 197.2 120.2 101.0 121.6 1349.4
Low Rain (mm)
1.0 1.4 3.4 7.8 33.8 13.2 53.4 28.2 35.6 19.2 14.6 2.0 303.4

Rocky Gully Annual Temperatures & Rainfall

Rocky Gully annual climate

Rocky Gully Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.4 0.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.9
≥ 35°C
3.1 2.5 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 1.8 9.0
≥ 30°C
9.6 8.4 5.4 1.4 0.0 0.0 0.0 0.0 0.0 0.5 3.3 6.4 35.2
≤ 2°C
0.0 0.0 0.0 0.0 0.1 0.4 1.2 0.6 0.6 0.2 0.0 0.0 3.1
≤ 0°C
0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.2

Rocky Gully 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
32.8 33.8 31.4 26.7 22.2 18.0 16.6 17.5 19.2 22.5 27.9 31.1 27.8
Low Max
21.7 21.8 19.5 17.3 15.3 13.0 12.4 12.6 13.4 14.9 17.6 19.7 14.5
High Min
15.6 16.4 16.1 13.7 12.4 10.2 9.0 9.3 9.8 10.8 12.8 14.1 13.6
Low Min
9.2 9.3 8.7 7.6 6.3 4.9 3.7 3.8 4.2 4.8 6.3 7.7 5.5

Rocky Gully Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
28 29 29 27 27 25 25 25 28 28 28 28 27.0
Earliest Entry
1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996
Latest Entry
2024 2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Maxima
28 28 29 28 27 26 26 26 28 28 28 28 27.0
Earliest Entry
1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996
Latest Entry
2024 2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Rainfall
27 29 29 27 27 24 24 24 28 27 28 28 27.0
Earliest Entry
1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996 1996
Latest Entry
2024 2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2024

Station Details

ROCKY GULLY
Southern Coastal, Western Australia
34.5714°S 117.0106°E 250m AMSL
Commenced 1995

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Rain arrives in Perth after driest seven months on record

20:16 AEST Perth just registered its driest October-to-April period on record despite a welcome burst of rain on Tuesday.  Summer and the surrounding months are typically the driest time of year in Perth as cold fronts shift further south and rain-shielding high pressure systems become the dominant synoptic feature over southwestern Australia.

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