Derby Long-term Averages

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Mean Max (°C)
35.2 34.7 35.4 35.7 33.0 30.6 30.9 32.8 35.7 37.3 38.2 37.4 34.7
Mean Min (°C)
25.8 25.5 25.1 22.9 18.7 15.8 14.6 15.8 19.3 23.1 25.6 26.3 21.5
Mean Rain (mm)
214.2 201.7 138.0 22.0 18.2 7.0 6.0 1.1 1.5 3.4 14.0 82.8 703.0
Median Rain (mm)
163.3 177.3 73.3 5.0 0.0 0.0 0.0 0.0 0.0 0.0 2.3 46.3 656.2
Mean Rain Days
13.5 12.4 10.1 2.9 1.7 1.0 0.6 0.3 0.2 1.0 2.0 7.6 53.2

Derby Daily Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max (°C)
44.0 43.8 41.9 41.5 40.3 36.6 36.2 39.3 42.7 44.8 44.6 45.6 45.6
Low Max (°C)
26.0 25.1 26.6 -1.0 19.1 19.6 20.3 20.6 21.2 29.4 28.3 26.2 -1.0
High Min (°C)
30.4 29.8 29.5 28.7 27.4 25.0 23.6 24.5 29.0 29.2 29.6 30.9 30.9
Low Min (°C)
19.2 19.2 19.3 13.7 8.2 6.1 6.0 6.1 9.1 11.7 18.5 18.5 6.0
High Rain (mm)
294.4 255.3 159.0 79.8 105.0 39.8 78.6 21.4 28.6 55.6 115.0 150.4 294.4

Derby Monthly Records

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Mn. Max (°C)
38.2 38.7 38.0 38.9 35.7 33.3 32.8 34.5 37.7 39.3 39.7 40.6 36.3
Low Mn. Max (°C)
31.7 32.0 32.5 32.3 29.6 28.0 27.8 30.3 32.8 35.4 36.0 34.4 33.3
High Mn. Min (°C)
27.8 27.4 27.1 24.9 21.9 19.9 18.4 20.2 21.9 25.8 27.2 27.6 23.4
Low Mn. Min (°C)
24.3 24.1 23.6 20.7 15.0 11.9 11.2 11.9 16.6 20.8 23.0 25.4 19.9
High Rain (mm)
703.2 445.4 689.2 165.0 132.0 88.6 153.0 23.6 40.4 56.4 206.0 436.8 1250.2
Low Rain (mm)
8.5 16.1 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 78.7

Derby Annual Temperatures & Rainfall

Derby annual climate

Derby Average Number of Days With Temperatures

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
≥ 40°C
1.2 0.9 0.6 0.3 0.0 0.0 0.0 0.0 0.8 4.0 6.1 4.9 18.0
≥ 35°C
17.7 13.1 18.4 20.2 7.2 0.5 0.6 4.8 18.8 26.2 28.1 25.7 179.2
≥ 30°C
28.7 26.4 29.8 29.0 27.3 19.4 21.3 28.2 29.3 30.6 29.7 30.0 326.6
≤ 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

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

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
High Max
38.2 37.6 37.8 37.5 35.5 32.8 32.8 34.8 37.8 39.4 40.2 39.7 38.1
Low Max
32.0 31.5 32.5 33.7 30.4 28.0 28.4 30.5 32.6 34.5 35.9 34.2 30.8
High Min
27.8 27.2 26.6 25.5 22.5 19.5 18.6 19.6 22.6 25.6 27.3 28.1 26.5
Low Min
23.6 23.7 23.2 19.7 15.2 11.7 11.0 12.8 16.7 20.4 23.5 24.1 15.5

Derby Data Availability

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ann
Years of Minima
37 39 38 37 39 37 39 39 39 38 37 38 38.0
Earliest Entry
1973 1973 1973 1972 1972 1972 1972 1972 1972 1972 1972 1972 1972
Latest Entry
2024 2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Maxima
38 39 38 37 39 37 39 39 39 38 37 38 38.0
Earliest Entry
1973 1973 1973 1972 1972 1972 1972 1972 1972 1972 1972 1972 1972
Latest Entry
2024 2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2024
Years of Rainfall
63 63 62 62 64 63 66 67 67 64 62 63 61.0
Earliest Entry
1952 1952 1951 1951 1951 1951 1951 1951 1951 1951 1951 1951 1951
Latest Entry
2024 2024 2024 2024 2023 2023 2023 2023 2023 2023 2023 2023 2024

Station Details

DERBY AERO
Kimberley, Western Australia
17.3706°S 123.6611°E 7m AMSL
Commenced 1951

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Signs indicating Australia's cool season arrival

16:15 AEST Mere hours after our Total Lightning Network went quiet over the Australian continent, the Himawari satellite captured a clear, textbook snapshot of the arrival of Australia's cool season.   A few distinguishing features should catch your eye:  A band of cloud streaming over northern WA and towards the nation's interior  A distinct clearing of cloud from most of the NT's Top End, and  A band of cloud crossing to the south of WA   Turns out, all three of these features point to one thing: winter is knocking at the door.  Image: Himawari satellite imagery and mean sea level pressure (ECMWF) over Australia on the morning of Saturday, April 27th, 2024.

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