Climate of Yamaguchi Prefecture, Japan
Area-weighted average across Yamaguchi Prefecture. For where people actually live and travel, see the cities below.
Yamaguchi Prefecture, a subdivision of Japan, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 3.9°C / 39°F in January to 25.8°C / 78.4°F in August, with rainfall from 60 mm / 2.4 in to 293 mm / 11.5 in depending on the season (1832 mm / 72.1 in total across the year).
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 3.9°C39°F | 72 mm2.8″ | — |
| February | 4.3°C39.7°F | 86 mm3.4″ | — |
| March | 7.3°C45.1°F | 129 mm5.1″ | — |
| April | 12.5°C54.5°F | 183 mm7.2″ | — |
| May | 16.9°C62.4°F | 181 mm7.1″ | — |
| June | 20.7°C69.3°F | 292 mm11.5″ | — |
| July | 24.8°C76.6°F | 293 mm11.5″ | — |
| August | 25.8°C78.4°F | 151 mm5.9″ | — |
| September | 22°C71.6°F | 199 mm7.8″ | — |
| October | 16.5°C61.7°F | 106 mm4.2″ | — |
| November | 11.2°C52.2°F | 80 mm3.1″ | — |
| December | 6.3°C43.3°F | 60 mm2.4″ | — |
Frequently asked questions
What is the best time to visit Yamaguchi Prefecture?
Yamaguchi Prefecture, Japan does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 25.8°C / 78.4°F, and the driest is December at 60 mm / 2.4 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Yamaguchi Prefecture?
Yamaguchi Prefecture, Japan has area-weighted monthly average temperatures ranging from 3.9°C / 39°F in January to 25.8°C / 78.4°F in August. Annual rainfall averages about 1832 mm / 72.1 in, with the wettest month being July (293 mm / 11.5 in) and the driest December (60 mm / 2.4 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Yamaguchi Prefecture?
The hottest month in Yamaguchi Prefecture is August, with an area-wide average temperature of 25.8°C / 78.4°F.
What is the coldest month in Yamaguchi Prefecture?
The coldest month in Yamaguchi Prefecture is January, with an area-wide average temperature of 3.9°C / 39°F.
When does it rain most in Yamaguchi Prefecture?
The wettest month in Yamaguchi Prefecture is July, averaging about 293 mm / 11.5 in of rainfall. The driest is December with about 60 mm / 2.4 in.