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Cockatoo Island Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
31.9 31.5 32.3 33.3 31.6 29.7 28.9 29.1 30.1 31.0 31.9 32.6 31.1
Mean Min (°C)
26.5 26.2 26.7 27.0 25.2 23.0 22.0 22.4 23.9 25.5 26.8 27.4 25.2
Mean Rain (mm)
278.5 256.1 167.8 40.0 64.1 12.1 8.5 1.9 1.0 3.4 6.5 69.8 890.7
Median Rain (mm)
199.6 205.0 110.0 16.8 20.3 0.0 0.0 0.0 0.0 0.0 1.5 30.0 768.8
Mean Rain Days
11.8 12.0 8.3 3.2 2.7 0.9 0.6 0.2 0.2 0.7 1.3 4.7 40.3

Cockatoo Island Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
39.0 37.8 37.0 38.5 36.8 34.3 33.8 34.9 37.2 39.6 37.6 38.5 39.6
Low Max (°C)
27.2 27.4 27.3 28.4 22.3 24.2 22.9 24.6 23.5 26.7 28.0 27.2 22.3
High Min (°C)
30.1 29.6 29.5 29.7 29.2 27.2 26.5 26.3 26.9 28.3 29.0 30.5 30.5
Low Min (°C)
21.1 19.6 21.5 20.7 18.3 17.2 17.1 17.9 18.2 22.3 21.0 22.7 17.1
High Rain (mm)
193.6 180.6 265.7 108.2 284.5 56.6 61.4 22.1 22.8 27.7 37.8 171.5 284.5

Cockatoo Island Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
32.7 32.8 33.8 35.0 33.0 31.8 30.3 30.5 31.1 32.2 34.0 33.1 31.9
Low Mn. Max (°C)
29.7 30.2 30.4 31.7 29.0 28.3 27.0 27.6 28.9 29.8 30.6 31.4 30.4
High Mn. Min (°C)
27.9 27.4 28.0 28.0 25.9 24.4 23.9 24.4 24.9 26.5 27.7 28.2 26.0
Low Mn. Min (°C)
25.3 25.3 25.7 25.7 24.2 21.5 20.5 21.4 22.9 24.7 25.9 26.6 24.3
High Rain (mm)
790.3 564.6 613.2 145.0 325.1 109.0 67.2 58.7 23.6 33.6 47.0 284.1 1603.1
Low Rain (mm)
27.5 2.0 2.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 231.8

Cockatoo Island Annual Temperatures & Rainfall

COCKATOO ISLAND

Mean daily minimum temp
Mean daily maximum temp
Highest/lowest on record
Highest/lowest on record
Mean monthly rainfall

Cockatoo Island Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°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
≥ 35°C
1.3 0.8 2.1 4.8 1.1 0.0 0.0 0.0 0.5 0.9 1.4 2.2 14.9
≥ 30°C
25.0 20.6 24.5 24.7 21.9 11.6 8.2 8.5 13.7 20.1 23.6 26.8 223.7
≤ 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

Cockatoo Island 'per Week' Values (14th/86th Percentiles)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
33.8 33.1 34.2 35.2 33.7 31.6 30.7 31.0 32.0 32.8 33.5 34.4 33.5
Low Max
30.1 29.8 30.2 31.6 29.4 27.6 27.0 27.1 28.3 29.1 29.9 31.0 28.8
High Min
28.5 28.1 28.4 28.3 26.9 24.9 23.7 23.9 25.1 26.6 27.8 28.6 27.9
Low Min
24.0 23.9 24.6 25.4 23.4 21.1 20.1 21.0 22.6 24.3 26.0 25.8 22.4

Cockatoo Island Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
16 15 16 15 16 16 15 15 15 15 16 15 15.3
Earliest Entry
1965 1965 1965 1965 1965 1965 1965 1965 1965 1965 1965 1965 1965
Latest Entry
1982 1982 1982 1982 1982 1982 1981 1981 1981 1981 1981 1981 1982
Years of Maxima
16 16 16 15 16 16 15 15 15 15 16 15 15.5
Earliest Entry
1965 1965 1965 1965 1965 1965 1965 1965 1965 1965 1965 1965 1965
Latest Entry
1982 1982 1982 1982 1982 1982 1981 1981 1981 1981 1981 1981 1982
Years of Rainfall
31 30 30 32 31 30 31 33 33 33 31 29 31.2
Earliest Entry
1948 1948 1948 1948 1948 1948 1948 1948 1948 1948 1948 1948 1948
Latest Entry
1984 1984 1984 1984 1982 1982 1982 1982 1982 1982 1982 1982 1984

Station Details

COCKATOO ISLAND
Kimberley, Western Australia
16.0900°S 123.5942°E 13m AMSL
Commenced 1948 / Closed 1985

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