September
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21.5°C / 20.3°C
21 rain days
mild, very wet
- extremely wet (21 rain days)
Best time to visit Rarotonga (Cook Islands)
Rarotonga (Cook Islands), Cook Islands — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. Every month has trade-offs — pick what you can tolerate.
About Rarotonga (Cook Islands)
Rarotonga is the largest and most populous island of the country of the Cook Islands. The island is volcanic, with an area of 67.39 km2 (26.02 sq mi), and is home to 72% of the country's population, with 10,898 of a total population of 15,040. Avarua, on the north coast, is the location of the Parliament buildings and the capital of the Cook Islands.
— condensed from Wikipedia ("Rarotonga")
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Months to skip
April
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24.3°C / 22.9°C
22 rain days
warm, very wet
- extremely wet (22 rain days)
July
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21.7°C / 20.4°C
22 rain days
mild, very wet
- extremely wet (22 rain days)
August
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21.2°C / 19.9°C
22 rain days
mild, very wet
- extremely wet (22 rain days)
October
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21.8°C / 20.6°C
22 rain days
mild, very wet
- extremely wet (22 rain days)
November
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22.7°C / 21.5°C
22 rain days
warm, very wet
- extremely wet (22 rain days)
December
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23.7°C / 22.4°C
22 rain days
warm, very wet
- extremely wet (22 rain days)
June
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22.4°C / 21°C
23 rain days
warm, very wet
- extremely wet (23 rain days)
May
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23.4°C / 22°C
24 rain days
warm, very wet
- extremely wet (24 rain days)
February
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25°C / 23.5°C
24 rain days
⚠ peak season
warm, very wet
- extremely wet (24 rain days)
- peak cyclone season
January
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24.6°C / 23.2°C
27 rain days
⚠ peak season
warm, very wet
- extremely wet (27 rain days)
- peak cyclone season
March
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25.1°C / 23.5°C
28 rain days
⚠ peak season
warm, very wet
- extremely wet (28 rain days)
- peak cyclone season
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.