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West Island, Cocos Islands climate
West Island has a remarkably steady tropical climate. The hottest month is March with an average daily high near 30°C, while the coldest is August averaging around 24°C at night.
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Summers
Warm
Highs near 30°C in March.
About 2 days a year above 32 °C
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Winters
Mild
Lows near 24°C in August.
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Rain
—
Not enough data.
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Sky & trend
Often cloudy
Cloudy skies much of the year.
+0.2 °C vs 50 years ago
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)West Island climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 30 | 29 | 29 | 28 | 28 | 28 | 29 | 29 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 30 | 30 | 30 | 30 | 29 | 29 |
| Avg temp (°C) | 28 | 28 | 28 | 28 | 27 | 27 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 28 | 28 | 29 | 29 | 29 |
| Avg temp (°C) | 26 | 26 | 26 | 27 | 27 | 27 |
| Avg low (°C) | 24 | 24 | 24 | 24 | 25 | 25 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.4 | 0.5 | 0.7 | 0.6 | 0.6 | 0.4 | 0.6 | 0.3 | 0.4 | 0.4 | 0.3 | 0.3 |
| Days with high ≥ 32°C (days) | 0.3 | 0.5 | 0.4 | 0.4 | — | — | — | — | — | — | 0.0 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.4 | 0.5 | 0.7 | 0.6 | 0.6 | 0.4 |
| Days with high ≥ 32°C (days) | 0.3 | 0.5 | 0.4 | 0.4 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.6 | 0.3 | 0.4 | 0.4 | 0.3 | 0.3 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.0 | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 68 | 71 | 71 | 70 | 71 | 72 | 67 | 66 | 63 | 67 | 67 |
| Relative humidity (%) | 79 | 80 | 81 | 81 | 80 | 80 | 79 | 78 | 78 | 78 | 79 | 79 |
| Wind speed (km/h) | 16.6 | 16.0 | 17.3 | 20.2 | 22.9 | 24.2 | 25.6 | 25.5 | 25.0 | 23.6 | 22.4 | 19.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 65 | 68 | 71 | 71 | 70 | 71 |
| Relative humidity (%) | 79 | 80 | 81 | 81 | 80 | 80 |
| Wind speed (km/h) | 16.6 | 16.0 | 17.3 | 20.2 | 22.9 | 24.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 67 | 66 | 63 | 67 | 67 |
| Relative humidity (%) | 79 | 78 | 78 | 78 | 79 | 79 |
| Wind speed (km/h) | 25.6 | 25.5 | 25.0 | 23.6 | 22.4 | 19.1 |
Methodology & sources
Temperature — 1991–2020 normals computed from 28 years of daily observations at Cocos Island Aero, a weather station, about 3 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.