SeasonMapCook Islands in May
May is Cook Islands's weakest month (rank 12 of 12): its 3 destinations average 69/100, led by Rarotonga at 71 — 24°C and 17 rainy days — while Aitutaki trails at 65 with 256 mm of rain.
#12 of 12 months for Cook Islands · 3 destinations · updated September 2026 · climate normals from ERA5 reanalysis
Where in Cook Islands in May
| # | Place | Type | Feels-like high | Rain | Comfort | At its best |
|---|---|---|---|---|---|---|
| 1 | Rarotonga | Island | 24°C | 174 mm · 17 days | 71 tier B | — |
| 2 | Avarua | Island | 26°C | 174 mm · 17 days | 70 tier B | — |
| 3 | Aitutaki | Island | 26°C | 256 mm · 20 days | 65 tier C | — |
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 May is one of that place's own top three months. Feels-like highs fold in humidity, wind and sun.