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Cook Islands weather in August 2025
Expect 25°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Cook Islands in August. Check more long-term weather averages for Cook Islands in August before you book your next holiday to Cook Islands in 2025/2026.
- 2525°C max day temperature
- 33 days with some rainfall
- 1919°C min night temperature
- 1111 hours of daylight per day
- LLow heat & humidity
- 152152 mm of monthly rainfall
- 88 (Very High) UV index
- 2424°C sea temperature
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Recommended for the Cook Islands
The August 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 August. Select a holiday destination to see more weather parameters.
All Cook Islands destinations
Metric (°C / mm) | Imperial (°F / inches)
How hot is it in the Cook Islands in August?
Daytime temperatures usually reach 25°C in Avarua, Cook Islands in August with low heat and humidity, falling to 19°C at night.
How warm is the sea around the Cook Islands in August?
The average sea temperature around Avarua, Cook Islands in August is 24°C.
Does it ever rain in the Cook Islands in August?
There are usually 3 days with some rain in Avarua, Cook Islands in August and the average monthly rainfall is 152mm.
Cook Islands August sunrise & sunset times
Browse the sunrise and sunset times for Cook Islands in August 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 |
---|---|---|
Friday, 1st August 2025 | 07:10 | 18:21 |
Saturday, 16th August 2025 | 07:01 | 18:26 |
Sunday, 31st August 2025 | 06:49 | 18:30 |
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