Ongerup Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
28.7 28.0 26.0 22.8 18.9 16.0 14.9 15.8 18.0 21.2 24.5 27.1 21.8
Mean Min (°C)
13.9 14.4 13.3 11.2 8.6 6.7 5.8 5.8 6.5 8.1 10.5 12.4 9.7
Mean Rain (mm)
18.6 19.0 22.5 26.0 42.6 49.2 49.5 43.4 38.6 33.1 25.6 17.7 385.8
Median Rain (mm)
8.6 11.8 14.2 20.3 38.6 42.0 48.0 40.2 35.4 27.8 19.9 8.8 378.8
Mean Rain Days
3.7 4.0 5.3 7.2 11.6 14.5 15.6 14.5 12.3 9.3 6.2 4.2 109.1

Ongerup Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.5 45.0 39.7 36.7 32.7 25.0 23.2 27.5 32.7 36.3 40.8 42.6 45.0
Low Max (°C)
15.0 14.8 13.8 11.1 9.5 8.0 7.9 8.2 9.1 9.4 10.0 14.1 7.9
High Min (°C)
26.6 25.3 24.4 20.6 18.5 14.8 13.5 15.4 19.1 19.5 23.2 23.8 26.6
Low Min (°C)
5.5 5.6 2.0 1.9 -0.9 -1.1 -2.0 -1.2 -2.2 -0.8 0.3 4.0 -2.2
High Rain (mm)
102.6 119.4 65.0 52.3 73.0 72.1 63.4 39.4 56.4 48.5 51.6 71.8 119.4

Ongerup Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
30.7 31.4 28.9 24.9 21.6 18.4 16.6 18.3 20.4 25.9 27.4 32.2 23.0
Low Mn. Max (°C)
24.4 25.4 22.1 19.0 16.1 13.2 13.5 14.1 14.3 18.3 19.5 22.3 20.3
High Mn. Min (°C)
15.9 16.0 15.4 14.0 11.5 8.4 7.4 8.3 8.0 10.4 12.9 14.6 10.5
Low Mn. Min (°C)
12.3 12.8 10.1 8.9 5.3 4.4 4.3 4.1 4.4 5.8 8.7 10.1 8.2
High Rain (mm)
146.6 211.2 113.1 135.1 136.8 166.3 146.8 88.4 90.6 96.8 137.2 105.0 548.7
Low Rain (mm)
0.0 0.0 0.0 0.0 4.8 12.5 11.8 6.6 1.8 0.0 0.0 0.0 170.8

Ongerup Annual Temperatures & Rainfall

Ongerup annual climate

Ongerup Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
0.8 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.3 1.4
≥ 35°C
4.4 3.4 2.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 1.4 2.7 13.8
≥ 30°C
11.9 9.4 6.6 2.0 0.1 0.0 0.0 0.0 0.1 1.8 5.1 8.8 45.0
≤ 2°C
0.0 0.0 0.0 0.0 0.4 1.5 3.1 2.5 2.0 0.7 0.1 0.0 10.2
≤ 0°C
0.0 0.0 0.0 0.0 0.0 0.2 0.5 0.2 0.1 0.0 0.0 0.0 1.0

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
34.9 34.4 32.2 27.4 22.5 18.6 17.2 18.3 21.4 25.7 30.4 33.2 29.2
Low Max
22.8 22.4 20.6 18.1 15.4 13.4 12.4 13.0 14.2 16.2 18.8 21.5 14.9
High Min
16.5 17.0 16.5 14.7 12.0 9.7 8.6 8.8 9.6 11.2 13.6 15.4 14.5
Low Min
10.8 11.4 9.6 7.5 5.2 3.5 2.6 2.6 3.3 4.5 7.0 9.1 4.9

Ongerup Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
51 49 49 51 50 51 51 52 54 52 51 52 51.0
Earliest Entry
1967 1967 1967 1967 1967 1967 1967 1966 1966 1966 1966 1966 1966
Latest Entry
2024 2023 2024 2024 2024 2024 2024 2023 2023 2023 2023 2023 2024
Years of Maxima
51 49 49 51 50 51 51 52 54 52 51 52 51.0
Earliest Entry
1967 1967 1967 1967 1967 1967 1967 1966 1966 1966 1966 1966 1966
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2023 2023 2023 2023 2023 2024
Years of Rainfall
109 109 108 106 108 106 109 106 109 110 107 105 109.0
Earliest Entry
1915 1915 1915 1915 1915 1914 1914 1914 1914 1914 1914 1914 1914
Latest Entry
2024 2024 2024 2024 2024 2024 2024 2023 2023 2023 2023 2023 2024

Station Details

ONGERUP
Southern Coastal, Western Australia
33.9634°S 118.4788°E 286m AMSL
Commenced 1914

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Could Australia see a negative IOD in 2024?

13:39 AEST A wet spring could be on the cards for large parts of Australia, with several models suggesting a negative Indian Ocean Dipole could develop in the Indian Ocean.  A negative Indian Ocean Dipole (IOD) refers to a pattern of sea surface temperatures in the tropical Indian Ocean that causes more moisture-laden air to flow towards Australia.  These negative IOD events, which occur on average once every five years, typically enhance northwest cloudbands over Australia and produce above-average rain over large areas of the country's south and southeast during winter and spring.  The Bureau of Meteorology declared yesterday that there is an increased chance of a negative IOD in spring.

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