Best time to visit Hiroshima
The best months to visit Hiroshima are October, May and June, based on month-by-month temperature and rainfall data. The full year of weather, daylight, holidays, and festival timing is below.
October, May and June score best for Hiroshima weather:
- May24° / 15°CMay is warm before the rainy season, good for island day trips and evening arcades.
- June27° / 20°CJune brings rainy season, so keep Peace Museum and Hondori time for wet afternoons.
- October24° / 15°COctober is comfortable, good for Saijo sake events, gardens, and long walks.
By TripSapien · Updated August 24, 2026
Hiroshima weather by month
| Month | High | Low | Rain (mm) | Rainy days | Daylight | Sea |
|---|---|---|---|---|---|---|
| January | 10° | 2° | 45 | 7 | 10h | 10° |
| February | 11° | 2° | 65 | 8 | 11h | 9° |
| March | 15° | 5° | 120 | 11 | 12h | 10° |
| April | 20° | 10° | 140 | 10 | 13h | 14° |
| MayBest weather | 24° | 15° | 170 | 10 | 14h | 18° |
| JuneBest weather | 27° | 20° | 225 | 12 | 14h | 22° |
| July | 31° | 24° | 280 | 12 | 14h | 28° |
| August | 33° | 25° | 130 | 9 | 13h | 29° |
| September | 29° | 21° | 165 | 10 | 12h | 29° |
| OctoberBest weather | 24° | 15° | 110 | 7 | 11h | 25° |
| November | 18° | 9° | 70 | 7 | 10h | 19° |
| December | 12° | 4° | 55 | 8 | 10h | 15° |
Temperatures in °C. Long-term monthly averages.
Know your Hiroshima month?
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Hiroshima month by month
January
Hiroshima in January: 9.9°C high, 2°C low, 45mm rain over 7 days, 9.9h daylight. Mild and dry — shoulder-season sweet spot.
February
Hiroshima in February: 10.9°C high, 2.4°C low, 65mm rain over 8 days, 10.8h daylight. Mild and dry — shoulder-season sweet spot.
March
Hiroshima in March: 14.5°C high, 5.1°C low, 120mm rain over 11 days, 11.7h daylight. Mild but rainy — flexible plans pay off.
April
Hiroshima in April: 19.8°C high, 10.1°C low, 140mm rain over 10 days, 12.9h daylight. Mild but rainy — flexible plans pay off.
MayBest weather
Hiroshima in May: 24.4°C high, 15.1°C low, 170mm rain over 10 days, 13.8h daylight. Mild but rainy — flexible plans pay off.
Flower Festival (First weekend of May)
JuneBest weather
Hiroshima in June: 27.2°C high, 19.8°C low, 225mm rain over 12 days, 14.3h daylight. Mild but rainy — flexible plans pay off.
July
Hiroshima in July: 30.9°C high, 24.1°C low, 280mm rain over 12 days, 14.1h daylight. Hot and rainy — afternoon storms, plan indoor afternoons.
August
Hiroshima in August: 32.8°C high, 25.1°C low, 130mm rain over 9 days, 13.3h daylight. Hot and rainy — afternoon storms, plan indoor afternoons.
Peace Memorial Ceremony (6 August)
September
Hiroshima in September: 29.1°C high, 21.1°C low, 165mm rain over 10 days, 12.2h daylight. Hot and rainy — afternoon storms, plan indoor afternoons.
OctoberBest weather
Hiroshima in October: 23.7°C high, 14.9°C low, 110mm rain over 7 days, 11.1h daylight. Mild but rainy — flexible plans pay off.
Sake Festival (Early October) · Food Festival (Last weekend in October)
November
Hiroshima in November: 17.7°C high, 8.9°C low, 70mm rain over 7 days, 10.2h daylight. Mild and dry — shoulder-season sweet spot.
December
Hiroshima in December: 12.1°C high, 4°C low, 55mm rain over 8 days, 9.7h daylight. Mild and dry — shoulder-season sweet spot.
Ready to plan Hiroshima?
Pick one of the best months and turn it into a full Hiroshima plan — every place checked for closures, limited hours, and booking needs on your dates.