Honolulu Weather in September
United States · 30-year monthly averages
👍 Good time to visit
September in Honolulu is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 24°C (75°F). Expect roughly 22mm of precipitation spread over about 4 rainy days, with little rainfall.
Avg high
31°C
88°F
Avg low
24°C
75°F
Rainfall
22mm
dry
Rainy days
4
days with ≥1mm
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
September vs the rest of the year
FAQ
- How hot is Honolulu in September?
- September in Honolulu is hot, with average daytime highs around 31°C (88°F) and nighttime lows near 24°C (75°F). Expect roughly 22mm of precipitation spread over about 4 rainy days, with little rainfall.
- Does it rain a lot in Honolulu in September?
- Honolulu sees around 22mm of precipitation in September on average — dry by global standards.
- Is September a good time to visit Honolulu?
- September is a good month to visit Honolulu, with generally agreeable conditions.