Monthly weather forecast and climate
Kapaa, HI

Average sea temperature - Kapaa, HI

The best month for swimming (with the highest average sea temperature) is September (80.2°F).
The coldest month (with the lowest average sea temperature) is March (74.8°F).

Average daylight - Kapaa, HI

The month with the longest days is June (Average daylight: 13.5h).
The month with shortest days is December (Average daylight: 10.8h).

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