Kailua-Kona, Hawaii weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Good
Best time to visit: April – November
What is the weather like in Kailua-Kona, Hawaii in December?
In December, Kailua-Kona, Hawaii is warm: daytime highs average 23 °C, and nights cool down to about 18 °C. The sea averages 25.7 °C – pleasant for swimming. The sun shines for around 7 hours a day. It rains often – on about 21 days, adding up to 136 mm. All in all, December is a good month for a holiday in Kailua-Kona, Hawaii.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 70 | 63 | 62 |
| Day | 24° | 23° | 23° |
| Night | 19° | 18° | 18° |
| Sea | 27° | 26° | 25° |
| Sun | 7 h | 7 h | 7 h |
| Rain days | 21 | 21 | 19 |
More details for December
- Daylight
- 10 h 57 min06:50 – 17:48
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 9 km/haverage daily peakAll months
- Cloud cover
- 52 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−10Pacific/Honolulu
How the score comes together
- Temperatureweight 35 %72 %
- Seaweight 25 %100 %
- Sunshineweight 20 %67 %
- 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 December
- Swimwear
- Sunscreen
- Rain jacket or umbrella
Kailua-Kona, Hawaii in December: quick answers
Is Kailua-Kona, Hawaii hot in December?
Warm rather than hot: in December, daytime highs in Kailua-Kona, Hawaii average 23 °C and nights cool to about 18 °C.
Can you swim in Kailua-Kona, Hawaii in December?
Yes. In December the sea averages 25.7 °C – pleasant for swimming.
Does it rain much in Kailua-Kona, Hawaii in December?
It rains often – on about 21 days, adding up to 136 mm.
Kailua-Kona, Hawaii month by month
The whole year in Kailua-Kona, HawaiiAll destinations: USAHawaii weather in DecemberWhere to go in DecemberSea temperature in December
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