West Island (Keeling Islands) weather by month

The best time to visit West Island (Keeling Islands) is August to October — 89/100 in October, 29°C and 8 rainy days. The best season is the dry season, July to November (84/100 on average).

The worst month is June at 70/100 — hot, soaked, muggy air. See June →

Updated September 2026 · climate normals from ERA5 reanalysis

West Island Cocos (Keeling) Islands · Java, Bali & Nusa Tenggara · Island89
  1. 80Jan
  2. 78Feb
  3. 71Mar
  4. 78Apr
  5. 78May
  6. 70Jun
  7. 80Jul
  8. 83Aug
  9. 86Sep
  10. 89Oct
  11. 83Nov
  12. 79Dec

Best season: July to November (84/100 on average) · worst June (70/100)

Days
29°C
Nights
25°C
Wet days
8
Sun
10.9 h
Humidity
77%
Daylight
12 h
West Island, Cocos (Keeling) Islands
Photo: paullymac · CC BY-SA 2.0

West Island, month by month

Comfort score out of 100 for the kind of trip West Island is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.

MonthScoreTierHighRainSunCrowdsOn
Jan80A30°C16 d11 hShoulder2
Feb78B31°C16 d11 hBusy3
Mar71B30°C20 d10 hBusy2
Apr78B31°C20 d10 hBusy2
May78B30°C21 d10 hQuiet1
Jun70B29°C21 d10 hQuiet1
Jul80A29°C19 d10 hShoulder1
Aug83A28°C16 d10 hBusy1
Sep86A29°C9 d11 hBusy1
Oct89A29°C8 d11 hBusy1
Nov83A29°C10 d11 hShoulder1
Dec79B30°C13 d11 hShoulder2

What's on in West Island through the year

Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.

February
  • Hari Raya Puasa on Home Island20 Feb – 5 Apr (usually)Holiday
May
  • Trade wind season1 May – 31 Oct (usually)Season
November
  • Cyclone season1 Nov – 30 Apr (usually)Hazard
December
  • Reef fish spawning season1 Dec – 28 Feb (usually)Nature

Crowds in West Island in October

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.

Busyschool holidays in 3 of the markets that fill it, one of its best months for weather(estimated)

JFMAMJJASOND

Peak crowdsBusyShoulder seasonQuiet

Traveller notes on West Island

What people who have been say about the place — the year-round notes first, then month by month.

Cocos (Keeling) Islands forum posters describe the climate as close to a permanent 28C, with a near-constant wind except during the 'doldrums' stretch from December into January or February, when the air goes hot and still. Locals specifically steer visitors away from that doldrums window and toward the rest of the year instead, which puts April - well clear of the doldrums but still ahead of the widely recommended July-through-October peak - in solid shape for steady breeze and the island's usual warm, settled conditions.
CocosKeelingRegular · April · 1 month ago · Read more on Tripadvisor ↗
Forum posters describe October in the Cocos (Keeling) Islands as genuinely beautiful, with temperatures holding constant in the 23-31C range, alongside increased humidity but less wind than the windier winter months. Posters describe a clear seasonal pattern here: November through March runs balmy with just slight breezes, July through September brings the strongest winds (prime kite and wind-surfing season), and October sits as the standout transition month with the calmer, most pleasant conditions of the year. Posters generally rate the islands as a year-round paradise regardless of season, but consistently single out October specifically for combining warm, settled weather with a welcome break from the stronger winds of the preceding months.
Tripadvisor community · October · 1 month ago · Read more on Tripadvisor ↗

Add your own note from West Island's card on the map.