Climate of Yamagata Prefecture, Japan
Area-weighted average across Yamagata Prefecture. For where people actually live and travel, see the cities below.
Yamagata Prefecture, a subdivision of Japan, has a strongly continental climate on average. Area-weighted monthly temperatures across the whole territory range from -2.3°C / 27.9°F in January to 23.1°C / 73.6°F in August, with rainfall from 94 mm / 3.7 in to 177 mm / 7 in depending on the season (1590 mm / 62.6 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 | -2.3°C27.9°F | 128 mm5″ | Snowy |
| February | -2.2°C28°F | 100 mm3.9″ | Snowy |
| March | 0.7°C33.3°F | 94 mm3.7″ | Snowy |
| April | 7.4°C45.3°F | 102 mm4″ | — |
| May | 13.2°C55.8°F | 98 mm3.9″ | — |
| June | 17.6°C63.7°F | 131 mm5.2″ | — |
| July | 21.6°C70.9°F | 175 mm6.9″ | — |
| August | 23.1°C73.6°F | 177 mm7″ | — |
| September | 18.4°C65.1°F | 169 mm6.7″ | — |
| October | 12°C53.6°F | 133 mm5.2″ | — |
| November | 6.1°C43°F | 143 mm5.6″ | — |
| December | 0.8°C33.4°F | 140 mm5.5″ | Snowy |
Frequently asked questions
What is the best time to visit Yamagata Prefecture?
Yamagata Prefecture, Japan does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 23.1°C / 73.6°F, and the driest is March at 94 mm / 3.7 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Yamagata Prefecture?
Yamagata Prefecture, Japan has area-weighted monthly average temperatures ranging from -2.3°C / 27.9°F in January to 23.1°C / 73.6°F in August. Annual rainfall averages about 1590 mm / 62.6 in, with the wettest month being August (177 mm / 7 in) and the driest March (94 mm / 3.7 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Yamagata Prefecture?
The hottest month in Yamagata Prefecture is August, with an area-wide average temperature of 23.1°C / 73.6°F.
What is the coldest month in Yamagata Prefecture?
The coldest month in Yamagata Prefecture is January, with an area-wide average temperature of -2.3°C / 27.9°F.
When does it rain most in Yamagata Prefecture?
The wettest month in Yamagata Prefecture is August, averaging about 177 mm / 7 in of rainfall. The driest is March with about 94 mm / 3.7 in.