Climate of Yamanashi Prefecture, Japan
Area-weighted average across Yamanashi Prefecture. For where people actually live and travel, see the cities below.
Yamanashi Prefecture, a subdivision of Japan, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from -1°C / 30.2°F in January to 21.5°C / 70.7°F in August, with rainfall from 35 mm / 1.4 in to 231 mm / 9.1 in depending on the season (1563 mm / 61.5 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 | -1°C30.2°F | 39 mm1.5″ | Snowy |
| February | -0.7°C30.7°F | 56 mm2.2″ | Snowy |
| March | 2.5°C36.5°F | 97 mm3.8″ | — |
| April | 8.6°C47.5°F | 124 mm4.9″ | — |
| May | 13.2°C55.8°F | 138 mm5.4″ | — |
| June | 16.6°C61.9°F | 208 mm8.2″ | — |
| July | 20.4°C68.7°F | 185 mm7.3″ | — |
| August | 21.5°C70.7°F | 231 mm9.1″ | — |
| September | 17.8°C64°F | 229 mm9″ | — |
| October | 12°C53.6°F | 148 mm5.8″ | — |
| November | 6.9°C44.4°F | 73 mm2.9″ | — |
| December | 1.9°C35.4°F | 35 mm1.4″ | Snowy |
Frequently asked questions
What is the best time to visit Yamanashi Prefecture?
Yamanashi Prefecture, Japan does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 21.5°C / 70.7°F, and the driest is December at 35 mm / 1.4 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Yamanashi Prefecture?
Yamanashi Prefecture, Japan has area-weighted monthly average temperatures ranging from -1°C / 30.2°F in January to 21.5°C / 70.7°F in August. Annual rainfall averages about 1563 mm / 61.5 in, with the wettest month being August (231 mm / 9.1 in) and the driest December (35 mm / 1.4 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Yamanashi Prefecture?
The hottest month in Yamanashi Prefecture is August, with an area-wide average temperature of 21.5°C / 70.7°F.
What is the coldest month in Yamanashi Prefecture?
The coldest month in Yamanashi Prefecture is January, with an area-wide average temperature of -1°C / 30.2°F.
When does it rain most in Yamanashi Prefecture?
The wettest month in Yamanashi Prefecture is August, averaging about 231 mm / 9.1 in of rainfall. The driest is December with about 35 mm / 1.4 in.