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.
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.