Cook Islands weather averages for holidays in 2017/2018

Check the Cook Islands weather averages before you book your next holiday in 2017/2018. Today's maximum temperature in the Cook Islands is expected to be 27°C, while the average maximum temperature in September is 26°C. The holiday weather guide shown below is for Avarua.

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Cook Islands weather averages

Check Cook Islands weather averages before you book your next holiday. The warmest months in the Cook Islands are February and March with an average maximum temperature of 29°C. The month with the least number of days with some rain is August with 3 days. The sea is at its warmest in the Cook Islands in March with an average sea temperature of 28°C. The Cook Islands weather averages shown below are for Avarua.

Maximum daytime temperature (°C)

Days with some rainfall

Sea temperature (°C)

More weather parameters

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

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Cook Islands weather today

Here is the weather in the Cook Islands today, Thursday 21st September 2017. Expect sunshine and showers in Cook Islands with a maximum temperature of 27°C, low levels of heat & humidity and 4 hours of bright sunshine. There are 5-10 mm of rainfall expected with 25% chance of some rain and a gentle breeze of 15 kph from the south-west. The weather forecast shown below is for Avarua.

  • 27
    °C maximum temperature
  • 20
    °C minimum temperature
  • sunshine and showers
  • 4
    hours of sunshine
  • 25
    % chance of some rain
  • <10
    mm of rainfall expected
  • L
    low heat & humidity
  • 15
    kph wind from SW

5-day weather forecast

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

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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.

What to pack for Cook Islands weather

Take light clothing whatever the time of year, supplemented by wraps for cooler evenings. Always go prepared for rain.

Tropical storm risk: Cook Islands cyclone season

% of month affected by tropical storms
1%
2%
1%
<1%
0
<1%
0
0
0
0
<1%
1%
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

The Cook Islands tropical storm risk chart above shows the cyclone season for Avarua, Cook Islands.

More about tropical storms

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Cook Islands holiday weather averages by month

Check Cook Islands holiday weather averages for a particular month by selecting from the list below. Monthly weather guides include figures for temperature, rainfall, sunshine hours and sea temperature plus daily sunrise & sunset times.

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Compare Cook Islands weather with the USA

Below the Cook Islands weather chart shows maximum daytime temperature for Cook Islands (Avarua) and the USA (Washington). For more weather parameters or to change the destinations shown visit the comparison weather tool.

Maximum daytime temperature (°C)

Cook Islands (Avarua)
USA (Washington)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

Compare more Cook Islands weather >>

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