Weather in Kumamoto in August
In an average August, Kumamoto sees a daily high around 30°C and a low around 22°C, based on 1980–2026 of local climate records.
| Average high | 30°C |
|---|---|
| Typical high range | 26°C to 33°C |
| Average low | 22°C |
| Typical low range | 20°C to 24°C |
| Average daily precipitation | 5 mm |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
38°C
2026-08-03
Lowest
21°C
2001-08-30
Low
Highest
28°C
2026-08-07
Lowest
15°C
2002-08-21
Feels-like
Highest
52°C
2024-08-05
Lowest
21°C
2001-08-30
Humidity
Highest
23.5 g/m³
2026-08-30
Lowest
10.9 g/m³
2002-08-21
Wind
Highest
44 km/h
2004-08-30
Lowest
3 km/h
1981-08-13
Gust
Highest
156 km/h
1993-08-09
Lowest
17 km/h
1998-08-29
Precip
Wettest
583 mm
2021
Driest
13 mm
2026
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