Honolulu, HI Weather
Honolulu hourly forecast: next 24 hours
Today's high of 80°F (27°C) is about 4°F (2°C) below the typical September high of 84°F (29°C).
Current conditions in detail
Honolulu weather tomorrow (Wednesday, September 16)
Tomorrow in Honolulu looks patchy rain nearby, with a high of 81° and an overnight low of 78°. There is a 53% chance of rain - plan accordingly. Winds top out near 22 mph, and the UV index reaches 11 (extreme).
Honolulu 14-day forecast
About the weather in Honolulu
Honolulu has one of the steadier climates in our dataset. Average highs move only 4°C across the whole year - from 76°F (25°C) in February to 84°F (29°C) in August - so the practical difference between seasons here is rainfall and daylight, not warmth.
Honolulu weather: quick facts
- Hottest month: August - highs near 84°F (29°C)
- Coldest month: February - highs near 76°F (25°C)
- Decade extremes (2015-2024): 88°F (31°C) high · 58°F (14°C) low
- Wettest month: December (7 rainy days) · Sunniest: June (12.8 h sun/day)
- Climate type: tropical wet-and-dry
- Annual swing: 4°C between the average warmest and coolest month · day to night: 5°C
- Average humidity: 73%
Temperatures through the year
Days and nights are about 5°C apart on average - narrower than all but 3% of the 3496 cities in our dataset. February bottoms out at 76°F (25°C) in daylight, 68°F (20°C) after dark. Warmth peaks in August: highs of 84°F (29°C), lows of 75°F (24°C). The gridded 2015-2024 daily record for this location tops out at 88°F (31°C) and bottoms at 58°F (14°C) - decade extremes, not all-time station records. Seven of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is November through May.
Rain, sun and snow
The wettest month is December (2.2 inches (55 mm) across 7 days) and the driest July. Between the average August and the average February lie 4°C, a narrower spread than about 88% of the cities we track.
Season by season
March through May
March through May settles into easy warmth here - highs near 79°F (26°C), nights near 70°F (21°C), and rain falls on around 30 of the 90 days. Daylight is generous - around 11.5 hours of sun a day.
June through August
June through August in Honolulu runs hot, with daytime highs averaging 83°F (29°C) and nights around 74°F (24°C); expect showers on roughly 23 days across the season. Daylight is generous - around 12.6 hours of sun a day. With the moisture factored in, afternoons feel hotter than the reading suggests - the humidity and dew point converter shows why.
September through November
Through September through November, Honolulu brings hot afternoons: 82°F (28°C) by day, 74°F (23°C) after dark, and expect showers on roughly 24 days across the season. Daylight is generous - around 10.8 hours of sun a day.
December through February
December through February in Honolulu is mild and warm, with daytime highs averaging 77°F (25°C) and nights around 69°F (20°C); expect showers on roughly 23 days across the season. Daylight is generous - around 10.0 hours of sun a day.
Average temperatures in Honolulu by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 77° | 68° | 7 | 1.4 in | 10.1 h/day | 74% |
| February | 76° | 68° | 8 | 2.0 in | 10.2 h/day | 73% |
| March | 77° | 69° | 10 | 2.1 in | 10.5 h/day | 74% |
| April | 79° | 71° | 11 | 1.8 in | 11.6 h/day | 73% |
| May | 80° | 72° | 9 | 1.6 in | 12.3 h/day | 72% |
| June | 82° | 73° | 7 | 1.0 in | 12.8 h/day | 71% |
| July | 83° | 75° | 7 | 0.8 in | 12.7 h/day | 72% |
| August | 84° | 75° | 9 | 1.5 in | 12.3 h/day | 72% |
| September | 84° | 75° | 8 | 1.1 in | 11.5 h/day | 72% |
| October | 83° | 74° | 10 | 1.5 in | 10.7 h/day | 74% |
| November | 80° | 72° | 6 | 1.2 in | 10.2 h/day | 74% |
| December | 78° | 70° | 7 | 2.2 in | 9.8 h/day | 75% |