Cook Islands weather in October 2025

Expect 26°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Cook Islands in October. Check more long-term weather averages for Cook Islands in October before you book your next holiday to Cook Islands in 2025/2026.

  • 26°C maximum daytime temperature in October in Cook Islands (Avarua)26
    26°C max day temperature
  • 5 days with some rainfall in October in Cook Islands (Avarua)5
    5 days with some rainfall
  • 20°C minimum night-time temperature in October in Cook Islands (Avarua)20
    20°C min night temperature
  • 13 hours of daylight per day in October in Cook Islands (Avarua)13
    13 hours of daylight per day
  • Moderate heat & humidity in October in Cook Islands (Avarua)M
    Moderate heat & humidity
  • 121 mm monthly rainfall in October in Cook Islands (Avarua)121
    121 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in October in Cook Islands (Avarua)11
    11+ (Extreme) UV index
  • 25°C sea temperature in October in Cook Islands (Avarua)25
    25°C sea temperature

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The October 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 October. 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 October?

Daytime temperatures usually reach 26°C in Avarua, Cook Islands in October with moderate heat and humidity, falling to 20°C at night.

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

The average sea temperature around Avarua, Cook Islands in October is 25°C.

Does it rain in the Cook Islands in October?

There are usually 5 days with some rain in Avarua, Cook Islands in October and the average monthly rainfall is 121mm.

Cook Islands October sunrise & sunset times

Browse the sunrise and sunset times for Cook Islands in October 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 October 2025 06:20 18:38
Thursday, 16th October 2025 06:07 18:43
Friday, 31st October 2025 05:56 18:49

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