Climate of Kumamoto Prefecture, Japan
Area-weighted average across Kumamoto Prefecture. For where people actually live and travel, see the cities below.
Kumamoto Prefecture, a subdivision of Japan, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 3.1°C / 37.6°F in January to 25°C / 77°F in August, with rainfall from 65 mm / 2.6 in to 442 mm / 17.4 in depending on the season (2371 mm / 93.3 in total across the year). See the city listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 3.1°C37.6°F | 76 mm3″ | — |
| February | 4.1°C39.4°F | 101 mm4″ | — |
| March | 7.5°C45.5°F | 154 mm6.1″ | — |
| April | 12.8°C55°F | 199 mm7.8″ | — |
| May | 17°C62.6°F | 237 mm9.3″ | — |
| June | 20.5°C68.9°F | 431 mm17″ | — |
| July | 24.4°C75.9°F | 442 mm17.4″ | — |
| August | 25°C77°F | 250 mm9.8″ | — |
| September | 21.7°C71.1°F | 215 mm8.5″ | — |
| October | 16.4°C61.5°F | 116 mm4.6″ | — |
| November | 10.9°C51.6°F | 85 mm3.3″ | — |
| December | 5.5°C41.9°F | 65 mm2.6″ | — |
Frequently asked questions
What is the best time to visit Kumamoto Prefecture?
Kumamoto Prefecture, Japan does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 25°C / 77°F, and the driest is December at 65 mm / 2.6 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Kumamoto Prefecture?
Kumamoto Prefecture, Japan has area-weighted monthly average temperatures ranging from 3.1°C / 37.6°F in January to 25°C / 77°F in August. Annual rainfall averages about 2371 mm / 93.3 in, with the wettest month being July (442 mm / 17.4 in) and the driest December (65 mm / 2.6 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Kumamoto Prefecture?
The hottest month in Kumamoto Prefecture is August, with an area-wide average temperature of 25°C / 77°F.
What is the coldest month in Kumamoto Prefecture?
The coldest month in Kumamoto Prefecture is January, with an area-wide average temperature of 3.1°C / 37.6°F.
When does it rain most in Kumamoto Prefecture?
The wettest month in Kumamoto Prefecture is July, averaging about 442 mm / 17.4 in of rainfall. The driest is December with about 65 mm / 2.6 in.