Hawaii weather by month & best time to visit
Climate for 2 places in Hawaii from 30 years of weather data. Best time to visit: January – December. August is the warmest month with 29 °C, February the coolest with 25 °C.
Best time to visit Hawaii
The best time to visit Hawaii is January – December: days of 25–29 °C, 8 hours of sunshine a day and 6 rainy days a month on average. The sea is 24–27 °C then. It reaches 20 °C, warm enough for most swimmers, all year round. Most rainy days fall in March (9).
Hawaii weather by month
Long-term averages of 2 places: the score is their mean, temperatures range from the coolest to the warmest place. Best months are marked; open a month for details.
| Month | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| JanuaryJan | 89 | 25° | 25° | 7 h | 7 |
| FebruaryFeb | 89 | 24–25° | 24° | 8 h | 6 |
| MarchMar | 87 | 25–26° | 24° | 8 h | 9 |
| AprilApr | 93 | 25–26° | 24–25° | 9 h | 7 |
| MayMay | 95 | 26–27° | 25° | 9 h | 7 |
| JuneJun | 97 | 27–28° | 26° | 10 h | 5 |
| JulyJul | 97 | 27–29° | 26° | 10 h | 5 |
| AugustAug | 97 | 28–29° | 26–27° | 9 h | 5 |
| SeptemberSep | 96 | 28–29° | 27° | 9 h | 4 |
| OctoberOct | 94 | 27–29° | 27° | 8 h | 6 |
| NovemberNov | 91 | 26–27° | 26° | 7 h | 6 |
| DecemberDec | 91 | 25–26° | 25° | 7 h | 7 |
Where is it warmest in Hawaii?
Compared in the coolest and the warmest month. Sunshine is the average per day over the year; rainy days are counted over the whole year.
| Place | Feb | Aug | Sea Feb | Sun h/day | Rain days/yr |
|---|---|---|---|---|---|
| Kihei, Maui | 25° | 29° | 24° | 7.8 | 48 |
| Honolulu | 24° | 28° | 24° | 8.4 | 96 |
In February, it is warmest in Kihei, Maui with 25 °C, ahead of Honolulu (24 °C).
Destinations in Hawaii2
Hawaii weather: quick answers
When is the best time to visit Hawaii?
The best time to visit Hawaii is January – December: days reach 25–29 °C, with 8 hours of sunshine a day and 6 rainy days a month on average.
What is the warmest month in Hawaii?
August is the warmest month, with daytime highs of 29 °C on average (28–29 °C depending on the place). The coolest is February with 25 °C.
How warm is it in Hawaii in February?
In February, the coolest month, days reach 24–25 °C on average and the sea is 24 °C.
When can you swim in Hawaii?
The sea is 20 °C or warmer all year round and warmest in September with 27 °C.
Where is it warmest in Hawaii?
In February, the warmest are Kihei, Maui (25 °C) and Honolulu (24 °C).
When does it rain most in Hawaii?
March has the most rainy days (9 on average), September the fewest (4).
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Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)