Okinawa 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
Poor
Best time to visit: June – October
What is the weather like in Okinawa in December?
In December, Okinawa is mild: daytime highs average 20 °C, and nights cool down to about 18 °C. The sea averages 23.8 °C – pleasant for swimming. The sun is scarce, with only about 4 hours a day. Rain is frequent, with about 12 rainy days and 129 mm in total. It is often windy, with gusts of around 36 km/h. All in all, December is not an ideal month for a holiday in Okinawa.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 61 | 39 | 29 |
| Day | 23° | 20° | 18° |
| Night | 21° | 18° | 16° |
| Sea | 26° | 24° | 22° |
| Sun | 4 h | 4 h | 3 h |
| Rain days | 12 | 12 | 11 |
More details for December
- Daylight
- 10 h 30 min07:09 – 17:39
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 3 daysdew point 18 °C or moreAll months
- Wind
- 36 km/haverage daily peakAll months
- Cloud cover
- 69 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 35 %12 %
- Seaweight 25 %97 %
- Sunshineweight 20 %8 %
- Few rainy daysweight 20 %44 %
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
- Windproof jacket
Okinawa in December: quick answers
Is Okinawa hot in December?
No. In December, Okinawa is mild: daytime highs average 20 °C and nights drop to about 18 °C.
Can you swim in Okinawa in December?
Yes. In December the sea averages 23.8 °C – pleasant for swimming.
Does it rain much in Okinawa in December?
Rain is frequent, with about 12 rainy days and 129 mm in total.
Okinawa month by month
The whole year in OkinawaAll destinations: JapanWhere 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