Kailua-Kona, 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: April – November
What is the weather like in Kailua-Kona, Hawaii in January?
In January, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 25.1 °C – pleasant for swimming. The sun shines for around 7 hours a day. It rains often – on about 19 days, adding up to 109 mm. All in all, January is a good month for a holiday in Kailua-Kona, Hawaii.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 63 | 62 | 59 |
| Day | 23° | 23° | 23° |
| Night | 18° | 18° | 17° |
| Sea | 26° | 25° | 25° |
| Sun | 7 h | 7 h | 7 h |
| Rain days | 21 | 19 | 20 |
More details for January
- Daylight
- 11 h 4 min07:01 – 18:05
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 9 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 35 %63 %
- Seaweight 25 %100 %
- Sunshineweight 20 %72 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in January
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Rain jacket or umbrella
Kailua-Kona, Hawaii in January: quick answers
Is Kailua-Kona, Hawaii hot in January?
Warm rather than hot: in January, daytime highs in Kailua-Kona, Hawaii average 23 °C and nights cool to about 18 °C.
Can you swim in Kailua-Kona, Hawaii in January?
Yes. In January the sea averages 25.1 °C – pleasant for swimming.
Does it rain much in Kailua-Kona, Hawaii in January?
It rains often – on about 19 days, adding up to 109 mm.
Kailua-Kona, Hawaii month by month
The whole year in Kailua-Kona, 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