What is the weather like in Karuizawa vs Osaka in September?

In September, Karuizawa averages 21°C high / 13°C low with about 179 mm of rain; Osaka averages 30°C high / 23°C low with about 171 mm.

Karuizawa vs Osaka in September

Karuizawa is the better pick in September — 78 vs 61 on SeasonMap's comfort score. Karuizawa is nice, soaked, clean air, while Osaka is sweltering, soaked, muggy air.

Karuizawa vs Osaka — September climate, side by side

	🇯🇵 Karuizawa	🇯🇵 Osaka
Comfort score	78/100 (B)	61/100 (C)
Feels-like high	23°C	34°C
Avg high / low	21° / 13°	30° / 23°
Rainfall	179 mm	171 mm
Rainy days	21	13
Humidity	87%	78%
Air quality (AQI)	40	65

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

Month by month

Karuizawa vs Osaka in September — FAQ

Is September better in Karuizawa or Osaka?: Karuizawa is the better pick in September — 78 vs 61 on SeasonMap's comfort score. Karuizawa is nice, soaked, clean air, while Osaka is sweltering, soaked, muggy air.
What is the weather like in Karuizawa vs Osaka in September?: In September, Karuizawa averages 21°C high / 13°C low with about 179 mm of rain; Osaka averages 30°C high / 23°C low with about 171 mm.