SeasonMapCook Islands in January
January is one of Cook Islands's weaker months (rank 11 of 12): its 3 destinations average 71/100, led by Avarua at 72 — 27°C and 19 rainy days — while Aitutaki trails at 70 with 263 mm of rain.
#11 of 12 months for Cook Islands · 3 destinations · updated September 2026 · climate normals from ERA5 reanalysis
Where in Cook Islands in January
| # | Place | Type | Feels-like high | Rain | Comfort | At its best |
|---|---|---|---|---|---|---|
| 1 | Avarua | Island | 27°C | 261 mm · 19 days | 72 tier B | — |
| 2 | Rarotonga | Island | 25°C | 261 mm · 19 days | 72 tier B | — |
| 3 | Aitutaki | Island | 27°C | 263 mm · 23 days | 70 tier B | — |
Comfort is SeasonMap's 0–100 score; each place is judged through the lens that suits it — beaches on beach weather, ski resorts on snow. "At its best" means January is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.
What's on in Cook Islands in January
- New Zealand summer holidays · Avarua and 1 more place · 19 Dec – 27 Jan (usually)