Cook Islands · Month comparison
December vs May
May ranks #1 overall vs December at #12. Dry season opens — the crowd-to-value sweet spot before New Zealand winter school holidays.
December
#12 of 12 months
Worth considering
Christmas crowds meet returning cyclone risk at 165mm — a difficult value proposition.
- ↑Christmas atmosphere is genuinely warm and festive in this small-island community
- ↑New Year celebrations in Avarua are intimate and local — a world away from resort new years
May
#1 of 12 months
Best match
Dry season opens — the crowd-to-value sweet spot before New Zealand winter school holidays.
- ↑85mm of rain is genuinely manageable — most days are dry and clear
- ↑Prices still below the June–August premium before school holidays hit
| Factor | December | May |
|---|---|---|
| Weather score | 3 | 8 |
| Value score | 5 | 7 |
| Crowd score | 5 | 7 |
| Events score | 6 | 5 |
| Atmosphere | 6 | 8 |
| Avg high temp | 27°C | 24°C |
| Monthly rain | 165mm | 85mm |
| Daily sunshine | 6.5hrs | 7hrs |
December trade-offs
- ↓165mm rainfall crosses the hard weather cap — prolonged heavy showers disrupt beach plans daily
- ↓Early cyclone season: storms possible from mid-December onward
- ↓Christmas week bookings need advance planning as flights from New Zealand fill quickly
May trade-offs
- ↓Evenings noticeably cooler than summer — pack a layer for open-air dinners
- ↓Some activities (lagoon cruises, sailing) operate reduced schedules before the main season
- ↓Less vibrant green in the interior as dry season bites
Scores compare months within Cook Islands. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →