Cook Islands weather

Get the latest coronavirus (COVID-19) updates for the Cook Islands with current travel advice, statistics and online resources.

Below are the temperatures expected today at popular destinations in the Cook Islands. Select a destination to compare today's forecast with average weather conditions.

Recommended for the Cook Islands

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The weather guide for Cook Islands shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by MeteoBlue. Find out more about our data sources.

Travel Up: Save up to 15% with flights + hotel deals

Sale

Combine flights + hotel & save up to 15% on holiday bookings
Search for holiday deals for destinations worldwide
Filter offers by price, board basis, star rating & accommodation

Go to Travel Up deal >>

View all Travel Up offers

Which is the hottest month in the Cook Islands?

The hottest time of year in Avarua, Cook Islands is normally February. Expect maximum daytime temperatures to reach 29°C with high heat and humidity.

Which month has the most rain in the Cook Islands?

In terms of rainfall, January is usually the wettest month in Avarua, Cook Islands with 267mm on average. There are normally 17 days in January with some rain.

When is the sea warmest in the Cook Islands?

The sea is usually at its warmest in Avarua, Cook Islands in March when the water temperature reaches 28°C.

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

Cook Islands weather overview

Mountainous Raratonga is the best known of the Cook Islands which are a group of six large and nine smaller Polynesian islands which share a tropical climate, strongly influenced by the seas which surround them. Rain occurs throughout the year but is heaviest between November and April when occasional storms and cyclones can hit.

Temperatures and humidity are high all year but May to October are cooler months and even very hot, sticky days are tempered by sea breezes which create a pleasant and healthy climate.