Cook Islands weather in January 2025

Expect 28°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Cook Islands in January. Check more long-term weather averages for Cook Islands in January before you book your next holiday to Cook Islands in 2025/2026.

  • 28°C maximum daytime temperature in January in Cook Islands (Avarua)28
    28°C max day temperature
  • 17 days with some rainfall in January in Cook Islands (Avarua)17
    17 days with some rainfall
  • 23°C minimum night-time temperature in January in Cook Islands (Avarua)23
    23°C min night temperature
  • 13 hours of daylight per day in January in Cook Islands (Avarua)13
    13 hours of daylight per day
  • High heat & humidity in January in Cook Islands (Avarua)H
    High heat & humidity
  • 267 mm monthly rainfall in January in Cook Islands (Avarua)267
    267 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Cook Islands (Avarua)11
    11+ (Extreme) UV index
  • 27°C sea temperature in January in Cook Islands (Avarua)27
    27°C sea temperature

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The January weather guide for Cook Islands (Avarua) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Cook Islands destinations

Below are average maximum temperatures at popular countries, regions and places in the Cook Islands in January. Select a holiday destination to see more weather parameters.

All Cook Islands destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in the Cook Islands in January?

Daytime temperatures usually reach 28°C in Avarua, Cook Islands in January with high heat and humidity, falling to 23°C at night.

How warm is the sea around the Cook Islands in January?

The average sea temperature around Avarua, Cook Islands in January is 27°C.

Does it rain in the Cook Islands in January?

There are usually 17 days with some rain in Avarua, Cook Islands in January and the average monthly rainfall is 267mm.

What is the chance of a cyclone in the Cook Islands in January?

On average less than 1 day in January in Avarua, Cook Islands is likely to be affected by the passage of one or more tropical storms.

Cook Islands January sunrise & sunset times

Browse the sunrise and sunset times for Cook Islands in January 2025. Select a month to view Cook Islands sunrise and sunset times for the next 12 months. The Cook Islands sunrise and sunset times shown below are for Avarua.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st January 2025 06:01 19:25
Thursday, 16th January 2025 06:11 19:27
Friday, 31st January 2025 06:21 19:24

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