Climate at a glance · Kumamoto
Annual mean17°day and night
Precipitation2182 mma year
Warmest monthAugustavg high 32°
Coldest monthJanuaryavg low 1°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
2182 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 10° | 12° | 17° | 21° | 24° | 27° | 31° | 32° | 30° | 25° | 19° | 12° |
| Avg low | 1° | 3° | 7° | 11° | 15° | 20° | 24° | 25° | 23° | 16° | 9° | 3° |
| Precip, mm | 56 | 97 | 189 | 158 | 311 | 409 | 248 | 339 | 154 | 87 | 91 | 43 |
| Wet days | 7 | 8 | 12 | 12 | 14 | 16 | 18 | 18 | 13 | 10 | 8 | 7 |
| Sunshine | 7.3 h | 7.6 h | 7.7 h | 8.1 h | 8.2 h | 7.4 h | 9.7 h | 10 h | 9.6 h | 8.6 h | 7.8 h | 7.7 h |
| Humidity | 73% | 72% | 75% | 74% | 78% | 83% | 80% | 79% | 79% | 74% | 75% | 73% |
| Sea temperature | 11° | 9° | 11° | 15° | 19° | 23° | 29° | 29° | 29° | 26° | 20° | 16° |
| Daylight | 10 h 16 | 11 h 01 | 11 h 59 | 13 h 00 | 13 h 51 | 14 h 16 | 14 h 04 | 13 h 20 | 12 h 22 | 11 h 22 | 10 h 29 | 10 h 02 |
| UV index (clear sky) | 4 | 6 | 8 | 10 | 11 | 12 | 12 | 11 | 9 | 7 | 5 | 4 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
32.8060°N, 130.6920°E