Cook Islands in January

January is one of Cook Islands's weaker months (rank 10 of 12): its 3 destinations average 75/100, led by Rarotonga at 78 — 30°C and 18 rainy days — while Avarua is warmer at 33°C and scores 77.

#10 of 12 months for Cook Islands · 3 destinations · updated September 2026 · climate normals from ERA5 reanalysis

Cook Islands, month by month

75/100 in January
  1. 75Jan
  2. 73Feb
  3. 77Mar
  4. 79Apr
  5. 73May
  6. 83Jun
  7. 81Jul
  8. 83Aug
  9. 86Sep
  10. 84Oct
  11. 85Nov
  12. 76Dec

Where in Cook Islands in January

#PlaceTypeFeels-like highRainComfortAt its best
1RarotongaIsland30°C197 mm · 18 days78 tier B—
2AvaruaIsland33°C197 mm · 18 days77 tier B—
3AitutakiIsland31°C247 mm · 22 days71 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 · Rarotonga and 1 more place · 19 Dec – 27 Jan (usually)

Better months for Cook Islands

September · 86/100November · 85/100October · 84/100Weakest: May · 73/100
← Cook Islands in DecemberCook Islands in February →Best time to visit Cook Islands, month by monthCompare: Rarotonga vs Avarua in January