Okinawa 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
Poor
Best time to visit: June – October
What is the weather like in Okinawa in January?
In January, Okinawa is mild: daytime highs average 18 °C, and nights cool down to about 16 °C. The sea averages 22.4 °C – refreshing for a swim. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 97 mm in total. It is often windy, with gusts of around 35 km/h. All in all, January is not an ideal month for a holiday in Okinawa.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 39 | 29 | 27 |
| Day | 20° | 18° | 18° |
| Night | 18° | 16° | 16° |
| Sea | 24° | 22° | 22° |
| Sun | 4 h | 3 h | 3 h |
| Rain days | 12 | 11 | 11 |
More details for January
- Daylight
- 10 h 39 min07:18 – 17:57
- UV index
- 5 · moderateclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 35 km/haverage daily peakAll months
- Cloud cover
- 72 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC+9Asia/Tokyo
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %77 %
- Sunshineweight 20 %0 %
- Few rainy daysweight 20 %48 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in January
- Swimwear
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
- Windproof jacket
Okinawa in January: quick answers
Is Okinawa hot in January?
No. In January, Okinawa is mild: daytime highs average 18 °C and nights drop to about 16 °C.
Can you swim in Okinawa in January?
Yes. In January the sea averages 22.4 °C – refreshing for a swim.
Does it rain much in Okinawa in January?
Rain is frequent, with about 11 rainy days and 97 mm in total.
Okinawa month by month
The whole year in OkinawaAll destinations: JapanWhere 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