What is the weather like in Hiroshima vs Nagano in September?

In September, Hiroshima averages 30°C high / 22°C low with about 221 mm of rain; Nagano averages 27°C high / 18°C low with about 200 mm.

Hiroshima vs Nagano in September

Nagano is the better pick in September — 71 vs 63 on SeasonMap's comfort score. Nagano is hot, soaked, clean air, while Hiroshima is hot, soaked, clean air.

Hiroshima vs Nagano — September climate, side by side

	🇯🇵 Hiroshima	🇯🇵 Nagano
Comfort score	63/100 (C)	71/100 (B)
Feels-like high	33°C	30°C
Avg high / low	30° / 22°	27° / 18°
Rainfall	221 mm	200 mm
Rainy days	15	18
Humidity	82%	86%
Air quality (AQI)	43	33

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Hiroshima 🇯🇵 Japanhot, soaked, clean air · best October63
Nagano 🇯🇵 Japanhot, soaked, clean air · best May71

Hiroshima vs Nagano in September — FAQ

Is September better in Hiroshima or Nagano?: Nagano is the better pick in September — 71 vs 63 on SeasonMap's comfort score. Nagano is hot, soaked, clean air, while Hiroshima is hot, soaked, clean air.
What is the weather like in Hiroshima vs Nagano in September?: In September, Hiroshima averages 30°C high / 22°C low with about 221 mm of rain; Nagano averages 27°C high / 18°C low with about 200 mm.