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Rarotonga, Cook Islands. Author Robert Linsdell. Licensed under the Creative Commons Attribution
Rarotonga, Cook Islands. Author Robert Linsdell

Cook Islands climate: when to go to the Cook Islands

The Cook Islands lie north of the Tropic of Capricorn, they typically have a tropical oceanic climate, with temperatures stable throughout the year, the average maximum temperatures vary between 25°C and 29°C, while the average minimum temperatures vary between 18°C in July and August and 23°C in January and February.

The differences are mainly due to seasonal rainfall patterns, in the Cook Islands there are in fact two seasons, a wet and rainy season from December to March, and a mild dry season from April to November. During the rainy season, from December to March, the Cook Islands can sometimes be affected by tropical cyclones and hurricanes.

The average annual rainfall is around 2100 mm, the wettest months are between December and April, the months with less than rainfall are those between June and October. Mosquito repellent are needed especially during the hot and humid season (December-March), especially on the island of Aitutaki.

One Foot Island, Aitutaki, Cook Islands. Author Philby. Licensed under the Creative Commons Attribution

One Foot Island, Aitutaki, Cook Islands. Author Philby

The annual average temperature of the seawater in Rarotonga is 26°C, with a maximum temperature of 28°C in February and a minimum of 24°C in August.

WHEN TO GO TO THE COOK ISLANDS

For a trip to the Cook Islands are generally preferred the less rainy months ranging from May/June to October.

COOK ISLANDS CLIMATE TABLES

Rarotonga

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Rain (mm)

234

257

284

196

150

122

112

119

127

135

163

206

Min Temp (°C)

23

23

22

22

20

19

18

18

19

20

21

22

Max Temp (°C)

29

29

29

28

26

25

25

25

25

26

27

28

Rarotonga

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sea Water Temperatures (°C)

27

28

28

27

27

25

24

24

25

25

26

26

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