Climate averages 1991–2020
Okinawa weather
in August.
A hot, wet month: one of the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Okinawa: daytime highs average 28.4°C and nights cool to about 26.5°C. By daytime temperature it is one of the warmest months of the year.
Expect about 178 mm of rain on roughly 15 days, which makes August a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 04 min on an average August day.
The nearest other city in this atlas is Uruma (7 km away). In August its highs average 29.0°C, 0.5°C warmer than Okinawa, with 175 mm of rain.
Among the 303 cities listed in Japan, Okinawa ranks joint 227th of 303 for the warmest August highs and joint 246th of 303 for the driest August (rainfall, lowest first). The mean August high of those 303 cities is 29.2°C; Okinawa is 0.7°C cooler than that mean.
From August to September, average highs fall by 0.9°C to 27.5°C, and monthly rainfall rises from 178 mm to 199 mm.
The annual picture
August 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, selected | 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 | 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
August in nearby cities
- Uruma in AugustJapan · 7 kmHigh 29.0°C · Low 27.1°C · 175 mm rain
- Naha in AugustJapan · 18 kmHigh 29.2°C · Low 27.3°C · 178 mm rain
- Keelung in AugustTaiwan · 622 kmHigh 30.1°C · Low 26.6°C · 171 mm rain
- Yilan, Taiwan in AugustTaiwan · 632 kmHigh 29.7°C · Low 25.4°C · 329 mm rain
- Kanoya in AugustJapan · 635 kmHigh 30.3°C · Low 24.9°C · 178 mm rain
- Neihu in AugustTaiwan · 638 kmHigh 30.4°C · Low 26.2°C · 302 mm rain
- Kagoshima in AugustJapan · 640 kmHigh 30.4°C · Low 25.3°C · 167 mm rain
- Taipei in AugustTaiwan · 645 kmHigh 30.6°C · Low 25.9°C · 302 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.