Hilo, HI Weather
Hilo hourly forecast: next 24 hours
Today's high of 80°F (26°C) is right in line with the typical July high of 80°F (26°C).
Current conditions in detail
Hilo weather tomorrow (Saturday, July 18)
Tomorrow in Hilo looks patchy rain nearby, with a high of 77° and an overnight low of 73°. There is a 71% chance of rain - plan accordingly. Winds top out near 10 mph, and the UV index reaches 11 (very high).
Hilo 14-day forecast
About the weather in Hilo
Located in Hawaii, United States, Hilo experiences a tropical rainforest climate with steady heat, high humidity and frequent downpours in every month. Afternoon temperatures peak near 80°F (27°C) in August and dip to about 75°F (24°C) in February, with around 93.6 inches (2378 mm) of precipitation falling across the year.
Hilo weather: quick facts
- Hottest month: August - highs near 80°F (27°C)
- Coldest month: February - highs near 75°F (24°C)
- Record high: 86°F (30°C) · Record low: 58°F (14°C) (2015–2024)
- Wettest month: March (23 rainy days) · Sunniest: June (11.7 h sun/day)
- Climate type: tropical rainforest - steady heat, high humidity and frequent downpours in every month
Temperatures through the year
The warmest stretch of the year centers on August. Highs average 80°F (27°C) and overnight lows stay near 71°F (22°C). The coolest month is February, with typical highs of 75°F (24°C) and lows around 65°F (18°C). Based on 2015–2024 weather data, temperatures have reached as high as 86°F (30°C) and dropped as low as 58°F (14°C).
Rain, sun and snow
March is usually the wettest month. It brings about 9.9 inches (250 mm) of rain over 23 days, while June is the driest. June brings the most sunshine, averaging 11.7 hours of sun a day.
Season by season
March through May
March through May in Hilo is pleasantly warm, with daytime highs averaging 76°F (24°C) and nights around 67°F (19°C); expect showers on roughly 74 days across the season.
June through August
June through August in Hilo is mild and warm, with daytime highs averaging 79°F (26°C) and nights around 70°F (21°C); expect showers on roughly 76 days across the season.
September through November
September through November in Hilo brings comfortable warmth, with daytime highs averaging 79°F (26°C) and nights around 70°F (21°C); expect showers on roughly 68 days across the season.
December through February
December through February in Hilo is pleasantly warm, with daytime highs averaging 75°F (24°C) and nights around 65°F (18°C); expect showers on roughly 56 days across the season.
Average temperatures in Hilo by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 76° | 65° | 15 | 5.7 in | 9.7 h/day | 79% |
| February | 75° | 65° | 20 | 8.5 in | 9.3 h/day | 80% |
| March | 75° | 66° | 23 | 9.9 in | 8.6 h/day | 82% |
| April | 76° | 67° | 24 | 9.3 in | 9.8 h/day | 82% |
| May | 77° | 68° | 26 | 8.0 in | 10.4 h/day | 82% |
| June | 78° | 69° | 23 | 5.1 in | 11.7 h/day | 82% |
| July | 80° | 70° | 27 | 6.6 in | 11.7 h/day | 82% |
| August | 80° | 71° | 26 | 9.1 in | 11.0 h/day | 83% |
| September | 80° | 71° | 24 | 5.5 in | 10.9 h/day | 81% |
| October | 80° | 70° | 22 | 8.5 in | 10.0 h/day | 81% |
| November | 78° | 68° | 22 | 9.4 in | 9.1 h/day | 82% |
| December | 76° | 66° | 22 | 8.0 in | 8.8 h/day | 82% |