SeasonMapRarotonga (Cook Islands) weather in January
Cook Islands
January in Rarotonga: hot, soaked, with clean air — fine if you can take 18 rainy days.
#9 of 12 months in Rarotonga · #518 of 1383 destinations to visit in January · comfort 78/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Rarotonga in January
Other months in Rarotonga
Rarotonga's forum calls October-November a favorite window, technically within cyclone season but with genuinely low odds of a storm actually hitting during a visit. Regulars note November runs noticeably more humid than October, though still comfortable enough to sleep without air conditioning, and flag it as low season for tourism, meaning better accommodation rates.
Add your own note from Rarotonga's card on the map.
Rarotonga climate normals — January
| Daytime high | 28°C / 82°F | 🥵 hot |
|---|---|---|
| Nighttime low | 22°C / 71°F | |
| Feels like (high) | 30°C / 86°F | |
| Sea temperature | 27°C / 80°F | 😎 warm sea |
| Rainfall | 197 mm / 7.8 in | ⛈ soaked |
| Rainy days | 18 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 21°C / 70°F | |
| Sunshine | 10.4 h/day | |
| Daylight | 13.2 h | |
| Wind | 28 km/h / 18 mph | |
| Air quality (US AQI) | 35 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Rarotonga in January
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.
BusyNew Zealand summer holidays, school holidays in 4 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Rarotonga's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherRarotonga's weather doesn't swing hard through the year — comfort stays fairly steady in every month.
What's on in Rarotonga in January
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Hazard
Cyclone season
1 Nov – 30 AprThe South Pacific cyclone season runs from November to April, peaking between December and February. Most years pass without a hit, and the wet months are the cheapest to visit. Source ↗
- Holiday
New Zealand summer holidays
19 Dec – 27 Jan · usuallySchool holidaysCrowdedThe island is a four-hour flight from Auckland, so the Christmas break fills the beachfront rentals despite it being the wet half of the year. Rates peak either side of New Year. Source ↗
Nearby, and something's on
Within 300 km of Rarotonga — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Rarotonga?
Rarotonga in January — FAQ
- Is January a good time to visit Rarotonga?
- January in Rarotonga: hot, soaked, with clean air — fine if you can take 18 rainy days. It ranks #9 of 12 months for Rarotonga on SeasonMap's comfort score (78/100).
- What is the weather like in Rarotonga in January?
- In January, Rarotonga averages a daily high of 27.7°C and a low of 21.7°C, with about 196.9 mm of rain over roughly 17.5 rainy days.
- What is the air quality in Rarotonga in January?
- Rarotonga has a mean US Air Quality Index of about 35 in January.
Other months in Rarotonga
Compare Rarotonga in January
Warmer or cooler than Rarotonga in January
Similar destinations in Pacific — January
Within 300 km: Avarua's New Zealand summer holidays around 19 Dec – 27 Jan.