Honolulu, Hawaii weather in October

Averages from 2021–2025 (155 days of record).

Average high: 84°F
Average low: 73°F
Rainy days: ~8 per month
Total precipitation: 1.1 in
Warmest recorded: 87°F
Coldest recorded: 67°F

Expect October days in Honolulu, Hawaii to top out around 84°F and cool to about 73°F overnight, with roughly 8 days of measurable rain across the month. In recent years October has ranged from 67°F to 87°F.

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Current Honolulu, Hawaii forecast → · Historical data by Open-Meteo (ERA5).