Climate at a glance · Okayama
Annual mean16°day and night
Precipitation1385 mma year
Warmest monthAugustavg high 33°
Coldest monthJanuaryavg low -1°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
1385 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 10° | 10° | 15° | 21° | 24° | 28° | 32° | 33° | 30° | 24° | 18° | 12° |
| Avg low | -1° | 0° | 4° | 9° | 13° | 19° | 24° | 25° | 22° | 14° | 7° | 1° |
| Precip, mm | 28 | 49 | 107 | 135 | 153 | 190 | 187 | 222 | 143 | 78 | 72 | 21 |
| Wet days | 4 | 7 | 10 | 10 | 11 | 13 | 13 | 13 | 12 | 9 | 5 | 5 |
| Sunshine | 7.4 h | 7.8 h | 8.1 h | 8.6 h | 9 h | 8.7 h | 10.3 h | 10.1 h | 8.9 h | 8.2 h | 8.2 h | 7.9 h |
| Humidity | 70% | 69% | 69% | 67% | 70% | 76% | 76% | 74% | 76% | 72% | 74% | 72% |
| Sea temperature | 10° | 8° | 10° | 14° | 18° | 22° | 27° | 30° | 29° | 25° | 19° | 14° |
| Daylight | 10 h 08 | 10 h 56 | 11 h 59 | 13 h 04 | 13 h 59 | 14 h 26 | 14 h 13 | 13 h 26 | 12 h 24 | 11 h 19 | 10 h 22 | 9 h 52 |
| UV index (clear sky) | 4 | 6 | 8 | 10 | 11 | 12 | 11 | 11 | 9 | 6 | 4 | 4 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
34.6500°N, 133.9330°E