Hiroshima weather in October
October in Hiroshima: nice, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Hiroshima · #85 of 604 destinations to visit in October · comfort 88/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Hiroshima climate normals — October
| Daytime high | 22°C / 72°F | 😎 nice |
|---|---|---|
| Nighttime low | 15°C / 58°F | |
| Feels like (high) | 22°C / 72°F | |
| Rainfall | 62 mm / 2.4 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 12°C / 54°F | |
| Sunshine | 8.5 h/day | |
| Daylight | 11.3 h | |
| Wind | 12 km/h / 8 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Hiroshima?
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Hiroshima in October — FAQ
- Is October a good time to visit Hiroshima?
- October in Hiroshima: nice, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Hiroshima on SeasonMap's comfort score (88/100).
- What is the weather like in Hiroshima in October?
- In October, Hiroshima averages a daily high of 22.2°C and a low of 14.6°C, with about 61.6 mm of rain over roughly 6.6 rainy days.
- What is the air quality in Hiroshima in October?
- Hiroshima has a mean US Air Quality Index of about 39 in October.