Hilo, Hawaii weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Good
Best time to visit: January – December
What is the weather like in Hilo, Hawaii in January?
In January, Hilo, Hawaii is warm: daytime highs average 24 °C, and nights cool down to about 19 °C. The sea averages 24.5 °C – pleasant for swimming. The sun shines for around 7 hours a day. It is the rainy season: rain falls on about 15 days, totalling 112 mm. All in all, January is a good month for a holiday in Hilo, Hawaii.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 62 | 70 | 66 |
| Day | 24° | 24° | 23° |
| Night | 20° | 19° | 19° |
| Sea | 25° | 25° | 24° |
| Sun | 7 h | 7 h | 7 h |
| Rain days | 20 | 15 | 16 |
More details for January
- Daylight
- 11 h 3 min06:57 – 18:01
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 12 daysdew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 48 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %68 %
- Few rainy daysweight 30 %21 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Nature escape”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Hilo, Hawaii in January: quick answers
Is Hilo, Hawaii hot in January?
Warm rather than hot: in January, daytime highs in Hilo, Hawaii average 24 °C and nights cool to about 19 °C.
Can you swim in Hilo, Hawaii in January?
Yes. In January the sea averages 24.5 °C – pleasant for swimming.
Does it rain much in Hilo, Hawaii in January?
It rains often – on about 15 days, adding up to 112 mm.
Hilo, Hawaii month by month
The whole year in Hilo, HawaiiAll destinations: USAHawaii weather in JanuaryWhere to go in JanuarySea temperature in January
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). Sources & licences