Cocos Islands weather by month
Average temperatures and rainfall across Cocos Islands, based on 30 years of climate data.
The average temperature in Cocos Islands is around 26° across the year, though it swings month to month and from region to region. The figures below show the monthly pattern for West Island.
- Hottest
- Mar
- 28°
- Coldest
- Sep
- 25°
- Wettest
- Mar
- 201 mm
- Driest
- Oct
- 48 mm
- Annual avg
- 26°
- year-round
- Rain / yr
- 1446 mm
- 172 wet days
- Largest city
- West Island
- 0k people
- Cities
- 1
- with climate data
Monthly climate (West Island)
Average highs, lows and rainfall through the year for West Island, Cocos Islands's largest city.
| Month | High / Low | Rainfall | Wet days |
|---|---|---|---|
| Jan | 27° / 26° | 114 mm | 13.3 |
| Feb | 27° / 26° | 177 mm | 15.6 |
| Mar | 28° / 26° | 201 mm | 20.6 |
| Apr | 28° / 26° | 196 mm | 20.2 |
| May | 27° / 26° | 132 mm | 18.7 |
| Jun | 27° / 26° | 133 mm | 17.3 |
| Jul | 26° / 25° | 120 mm | 17.6 |
| Aug | 26° / 25° | 62 mm | 14.1 |
| Sep | 26° / 25° | 58 mm | 8.7 |
| Oct | 26° / 25° | 48 mm | 7 |
| Nov | 26° / 25° | 94 mm | 8.2 |
| Dec | 27° / 26° | 112 mm | 10.5 |
Climate in West Island
Full West Island forecastWest Island is the largest city in Cocos Islands; its cloud cover, humidity, wind and sunshine are typical of the surrounding region.
Clouds and sunshine
How often the daytime sky is clear, partly cloudy or overcast through the year.
In West Island, the average share of the sky covered by clouds shows moderate seasonal variation over the course of the year.
The clearer part of the year begins around July 15 and lasts for 4.4 months, ending around November 26. The clearest month is October, when the sky is clear, mostly clear, or partly cloudy 61% of the time on average.
The cloudier part of the year begins around January 22 and lasts for 3.6 months, ending around May 10. The cloudiest month is March, when it is overcast or mostly cloudy 54% of the time.
Humidity comfort
Share of days at each humidity comfort level, based on the dew point — the measure that tracks how muggy it actually feels.
Wind
Average wind speed through the year, banded into plain-language speed zones so a number reads as 'breezy' or 'calm' without knowing the scale.
This is the average sustained wind speed at the standard 10 metres above open ground — the steady flow a weather station reports, not the sharper gusts that come and go, which can run half again as fast. It's the number that says whether a place is generally breezy or calm.
Across the year, average wind speed in West Island is typically breezy, near 26 km/h, and varies a lot with the seasons.
The windier part of the year lasts 7.0 months, from around May 2 to Dec 1. The windiest month is July, averaging about 32 km/h (windy).
The calmer part of the year runs from around Dec 2 to May 1, with February the calmest month at about 19 km/h.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 20 | 19 | 20 | 24 | 27 | 29 | 32 | 32 | 31 | 29 | 28 | 24 |
| Feels | breezy | light breeze | breezy | breezy | breezy | windy | windy | windy | windy | windy | breezy | breezy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| Jan | 20 | breezy |
| Feb | 19 | light breeze |
| Mar | 20 | breezy |
| Apr | 24 | breezy |
| May | 27 | breezy |
| Jun | 29 | windy |
| Jul | 32 | windy |
| Aug | 32 | windy |
| Sep | 31 | windy |
| Oct | 29 | windy |
| Nov | 28 | breezy |
| Dec | 24 | breezy |
Best time to visit Cocos Islands
A 0–10 score combining daytime comfort, chance of rain and cloud cover — the sweet spot runs late July to late December.
Solar energy
Average daily shortwave solar energy reaching the ground, banded into brightness zones so the number means something at a glance.
Solar energy is how much sunlight actually reaches the ground each day, measured in kilowatt-hours per square metre (kWh/m²) — the combined effect of how long the sun is up, how high it climbs, and how much cloud gets in the way. It's the raw fuel a solar panel has to work with: for scale, 1 kWh/m² a day is dim and wintry, while 7+ is desert-bright.
West Island receives about 5.6 kWh/m² a day of solar energy on average — bright — with a clear seasonal swing between 4.2 and 6.5 kWh/m².
The brighter stretch of the year lasts 6.6 months, from around Sep 5 to Mar 25. The brightest month is January, averaging about 6.4 kWh/m² (intense).
The dimmest month is June, down near 4.3 kWh/m² — roughly 34% less than the January peak.
Where is Cocos Islands?
Cocos Islands sits around 12.2°S, 96.8°E. The marker shows West Island, its largest city, among 1 city with climate data here.
