Rarotonga (Cook Islands) in January
In January, Rarotonga (Cook Islands) averages 25°C (76°F) during the day and 23°C (74°F) at night, with frequent rain — about 27 days of the month see precipitation (237 mm total).
High seasonConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
It's peak cyclone season in Rarotonga (Cook Islands) during January. Travel is possible but expect storm risk, possible flight disruption, and generally lower travel insurance coverage.
How January compares to the rest of the year in Rarotonga (Cook Islands)
January is one of the warmest months in Rarotonga (Cook Islands) (3rd of 12) and one of the wettest months (2nd of 12). Daytime temperature runs 1°C above the annual average (23°C). January runs 1°C warmer than December (24°C) and stays flat into February.
January sunrise & sunset in Rarotonga (Cook Islands)
Times shown for Rarotonga (Cook Islands) local time (Pacific/Rarotonga), calculated for the 15th of January. They shift by a few minutes day to day across the month.
Photography light in Rarotonga (Cook Islands) — January
Golden-hour and blue-hour windows for the 15th of January, in Rarotonga (Cook Islands)'s local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Rarotonga (Cook Islands) in January
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on January's tier (High season) and Rarotonga (Cook Islands)'s popularity.
Crowds & pricing — January in Rarotonga (Cook Islands)
This is a busy month in Rarotonga (Cook Islands) — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather Southern Hemisphere summer holidays peak hazard season (1 active)
Sun & mosquito risk — January in Rarotonga (Cook Islands)
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in Rarotonga (Cook Islands) — January
Across the year Rarotonga (Cook Islands)'s sea swings from 24.1°C (October) to 28.3°C (March) — January sits at 26.9°C.
Rarotonga (Cook Islands) in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 25°C / 76°F | 23°C / 74°F | 237 mm | 27 | — |
| February | 25°C / 77°F | 24°C / 74°F | 182 mm | 24 | — |
| March | 25°C / 77°F | 24°C / 74°F | 253 mm | 28 | — |
| April | 24°C / 76°F | 23°C / 73°F | 146 mm | 22 | — |
| May | 23°C / 74°F | 22°C / 72°F | 163 mm | 24 | — |
| June | 22°C / 72°F | 21°C / 70°F | 92 mm | 23 | — |
| July | 22°C / 71°F | 20°C / 69°F | 111 mm | 22 | — |
| August | 21°C / 70°F | 20°C / 68°F | 92 mm | 22 | — |
| September | 22°C / 71°F | 20°C / 69°F | 73 mm | 21 | — |
| October | 22°C / 71°F | 21°C / 69°F | 101 mm | 22 | — |
| November | 23°C / 73°F | 22°C / 71°F | 97 mm | 22 | — |
| December | 24°C / 75°F | 22°C / 72°F | 186 mm | 22 | — |
Other cities with similar January weather
🌍 See the full ranked list of climate twins for Rarotonga (Cook Islands) in January →
Frequently asked questions
How hot is Rarotonga (Cook Islands) in January?
In January, Rarotonga (Cook Islands) averages a high of 25°C (76°F) and a low of 23°C (74°F) — generally warm.
Does it rain a lot in Rarotonga (Cook Islands) in January?
January is quite rainy in Rarotonga (Cook Islands), with about 27 rainy days on average.
Is January a good time to visit Rarotonga (Cook Islands)?
January is warm but on the rainy side. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Rarotonga (Cook Islands) in January?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full January packing list for Rarotonga (Cook Islands) for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.