Honolulu weather in September
September in Honolulu averages 88°F by day and 75°F at night, with 0.9 inches of precipitation. It is the 2nd-warmest and 7th-wettest month of the year here.
- Average high
- 88°F-0° vs August
- Average low
- 75°F0 nights below freezing
- Precipitation
- 0.9 in2 days with 0.1 in. or more
- Snow
- 0.0 in9 days at 90°F+
Is September a good time to visit Honolulu?
September is hot. Average highs reach 88°F, with about 9 days at 90°F or more. The most comfortable months overall are November to May.
What to do in Honolulu in September
Mix it up: Honolulu Museum of Art, Honolulu Zoo, Waikiki Aquarium, Lyon Arboretum. All things to do in Honolulu.
On September 15 the sun rises at 6:18 am and sets at 6:33 pm, giving 12h 15m of daylight. Daylight all year.
What to pack for Honolulu in September
- Light, breathable clothes, a hat and sunscreen; carry water
Based on 30-year averages, not a forecast. Check the forecast a few days before you go.
September nearby
| City | Distance | High | Low | Precip. |
|---|---|---|---|---|
| Honolulu | 88°F | 75°F | 0.9 in | |
| Daly City, CA | 2391 mi | 65°F | 55°F | 0.1 in |
| Santa Rosa, CA | 2395 mi | 84°F | 51°F | 0.2 in |
| San Francisco, CA | 2395 mi | 70°F | 56°F | 0.1 in |
| San Mateo, CA | 2395 mi | 75°F | 56°F | 0.1 in |
| Redwood City, CA | 2397 mi | 79°F | 54°F | 0.1 in |
| Richmond, CA | 2402 mi | 75°F | 56°F | 0.0 in |
Frequently asked questions
What is the weather like in Honolulu in September?
In September, Honolulu averages a high of 88°F and a low of 75°F, with 0.9 inches of precipitation (NOAA 1991-2020 normals).
Is September a good time to visit Honolulu?
September is hot in Honolulu, with average highs of 88°F. Plan outdoor time for mornings and evenings.
Does it snow in Honolulu in September?
Rarely. The September snowfall normal is under half an inch.
Before and after: Honolulu in August and Honolulu in October. All twelve months: Honolulu weather by month.
NOAA NCEI 1991-2020 climate normals, station Honolulu Intl. Airport, HI, 4.7 miles from the city center; snowfall from Waikiki 717.2, HI.