Weather in Kumamoto in September
In an average September, Kumamoto sees a daily high around 27°C and a low around 21°C, based on 1980–2026 of local climate records.
| Average high | 27°C |
|---|---|
| Typical high range | 24°C to 30°C |
| Average low | 21°C |
| Typical low range | 18°C to 24°C |
| Average daily precipitation | 5 mm |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
34°C
2020-09-01
Lowest
18°C
1980-09-25
Low
Highest
28°C
2020-09-01
Lowest
9°C
1987-09-27
Feels-like
Highest
48°C
2024-09-16
Lowest
7°C
1987-09-27
Humidity
Highest
23.3 g/m³
2024-09-15
Lowest
7.6 g/m³
1987-09-27
Wind
Highest
69 km/h
1991-09-27
Lowest
4 km/h
1998-09-25
Gust
Highest
168 km/h
1991-09-27
Lowest
13 km/h
2014-09-15
Precip
Wettest
388 mm
1993
Driest
30 mm
2007
See Kumamoto's live weather grade →
Visiting Kumamoto in September? See how its comfort stacks up against where you live.
Compare Kumamoto with your city →