Climate averages 1991–2020
Okinawa weather
in December.
A mild, wet month: the 9th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Okinawa: daytime highs average 19.7°C and nights cool to about 17.5°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 113 mm of rain on roughly 11 days, which makes December a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 31 min on an average December day.
The nearest other city in this atlas is Uruma (7 km away). In December its highs average 20.2°C, 0.5°C warmer than Okinawa, with 110 mm of rain.
Among the 303 cities listed in Japan, Okinawa ranks 3rd of 303 for the warmest December highs and joint 273rd of 303 for the driest December (rainfall, lowest first). The mean December high of those 303 cities is 9.5°C; Okinawa is 10.2°C warmer than that mean.
From December to January, average highs fall by 1.7°C to 18.0°C, and monthly rainfall falls from 113 mm to 103 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Okinawa climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 18.0°C15.6°C | 15.6°C | 103 | 11.7 | 10.711 h |
| February | 18.2°C15.6°C | 15.6°C | 96 | 11.5 | 11.311 h |
| March | 19.6°C16.9°C | 16.9°C | 128 | 12.7 | 12.012 h |
| April | 21.6°C19.2°C | 19.2°C | 150 | 12.7 | 12.813 h |
| May | 24.1°C21.9°C | 21.9°C | 207 | 13.8 | 13.413 h |
| June | 26.7°C24.9°C | 24.9°C | 218 | 15.8 | 13.814 h |
| July | 28.4°C26.5°C | 26.5°C | 126 | 11.3 | 13.614 h |
| August | 28.4°C26.5°C | 26.5°C | 178 | 14.8 | 13.113 h |
| September | 27.5°C25.6°C | 25.6°C | 199 | 14.2 | 12.312 h |
| October | 25.4°C23.6°C | 23.6°C | 141 | 11.6 | 11.612 h |
| November | 22.8°C20.9°C | 20.9°C | 101 | 10.5 | 10.911 h |
| December, selected | 19.7°C17.5°C | 17.5°C | 113 | 11.2 | 10.511 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Uruma in DecemberJapan · 7 kmHigh 20.2°C · Low 18.1°C · 110 mm rain
- Naha in DecemberJapan · 18 kmHigh 20.6°C · Low 18.5°C · 113 mm rain
- Keelung in DecemberTaiwan · 622 kmHigh 19.5°C · Low 16.5°C · 186 mm rain
- Yilan, Taiwan in DecemberTaiwan · 632 kmHigh 18.8°C · Low 15.1°C · 243 mm rain
- Kanoya in DecemberJapan · 635 kmHigh 13.8°C · Low 7.3°C · 83 mm rain
- Neihu in DecemberTaiwan · 638 kmHigh 19.4°C · Low 16.0°C · 108 mm rain
- Kagoshima in DecemberJapan · 640 kmHigh 13.5°C · Low 8.0°C · 85 mm rain
- Taipei in DecemberTaiwan · 645 kmHigh 19.3°C · Low 15.5°C · 108 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Okinawa) is explained once on the Okinawa year overview and on the Sources, method and limits page.
Naha lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.