Hiroshima weather in July
July in Hiroshima: sweltering, soaked, with clean air — a fair time to visit.
#11 of 12 months in Hiroshima · #519 of 604 destinations to visit in July · comfort 55/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Hiroshima climate normals — July
| Daytime high | 29°C / 84°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 23°C / 74°F | |
| Feels like (high) | 34°C / 93°F | |
| Rainfall | 327 mm / 12.9 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 24°C / 75°F | |
| Sunshine | 8.5 h/day | |
| Daylight | 14.2 h | |
| Wind | 12 km/h / 7 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Hiroshima in July — FAQ
- Is July a good time to visit Hiroshima?
- July in Hiroshima: sweltering, soaked, with clean air — a fair time to visit. It ranks #11 of 12 months for Hiroshima on SeasonMap's comfort score (55/100).
- What is the weather like in Hiroshima in July?
- In July, Hiroshima averages a daily high of 28.9°C and a low of 23.3°C, with about 326.5 mm of rain over roughly 19.6 rainy days.
- What is the air quality in Hiroshima in July?
- Hiroshima has a mean US Air Quality Index of about 41 in July.