Climate at a glance · Hiroshima
Annual mean60°day and night
Precipitation62.28 ina year
Warmest monthAugustavg high 88°
Coldest monthJanuaryavg low 32°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
62.28 in a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 48° | 50° | 57° | 66° | 72° | 77° | 86° | 88° | 84° | 73° | 63° | 52° |
| Avg low | 32° | 34° | 39° | 48° | 55° | 64° | 73° | 75° | 70° | 57° | 46° | 36° |
| Precip, in | 1.65 | 2.80 | 5.16 | 5.87 | 6.97 | 8.19 | 7.17 | 11.38 | 6.18 | 2.36 | 3.43 | 1.14 |
| Wet days | 6 | 7 | 10 | 10 | 10 | 14 | 13 | 15 | 13 | 8 | 5 | 5 |
| Sunshine | 7.5 h | 7.8 h | 7.8 h | 8.6 h | 9 h | 8.5 h | 10.1 h | 10 h | 8.9 h | 8.3 h | 8.4 h | 7.8 h |
| Humidity | 70% | 70% | 73% | 73% | 76% | 83% | 83% | 80% | 79% | 74% | 74% | 71% |
| Sea temperature | 52° | 48° | 50° | 56° | 64° | 71° | 83° | 85° | 83° | 76° | 67° | 59° |
| Daylight | 10 h 09 | 10 h 57 | 11 h 59 | 13 h 03 | 13 h 57 | 14 h 25 | 14 h 12 | 13 h 25 | 12 h 23 | 11 h 19 | 10 h 23 | 9 h 54 |
| 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)
34.4000°N, 132.4500°E