SeasonMapWest Island (Keeling Islands) weather in May
Cocos (Keeling) Islands
May in West Island: hot, rainy, with muggy air — fine if you can take 21 rainy days.
#10 of 12 months in West Island · #825 of 1383 destinations to visit in May · comfort 78/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on West Island in May
No notes yet. Open West Island on the map to add the first one.
West Island climate normals — May
| Daytime high | 30°C / 85°F | 🥵 hot |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 32°C / 90°F | |
| Sea temperature | 29°C / 83°F | ♨️ bath-warm |
| Rainfall | 148 mm / 5.8 in | 🌧 rainy |
| Rainy days | 21 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 10 h/day | |
| Daylight | 11.6 h | |
| Wind | 33 km/h / 21 mph | |
| Air quality (US AQI) | 54 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in West Island in May
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Quietschool holidays in 3 of the markets that fill it, one of its worst months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for West Island's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherWest Island's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in West Island in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Trade wind season
1 May – 31 Oct · usuallySoutheast trade winds hold for about nine months of the year, but the steadiest stretch for kitesurfing across the lagoon runs May to October. The rest of the year, the doldrums, brings lighter and far more variable wind. Source ↗
Where is West Island?
West Island in May — FAQ
- Is May a good time to visit West Island?
- May in West Island: hot, rainy, with muggy air — fine if you can take 21 rainy days. It ranks #10 of 12 months for West Island on SeasonMap's comfort score (78/100).
- What is the weather like in West Island in May?
- In May, West Island averages a daily high of 29.7°C and a low of 25.5°C, with about 147.9 mm of rain over roughly 21.1 rainy days.
- What is the air quality in West Island in May?
- West Island has a mean US Air Quality Index of about 54 in May.