Pity it was a cloudy/rainy day. Didn’t get to see mount fuji. Nevertheless, kudos to the guide/driver - Bruce, who brought us around, safely and efficiently. It would be better if more time is catered for the first stop, Arakurayama Sengen Park.
Anonymous User
Couple
Yamanashi Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Yamanashi year round climate
Spring (March–May): Average 11.3–19.1°C, mild climate but with relatively heavy rainfall, especially frequent in April and May. Common activities: Flower viewing, hiking (be aware of changing weather conditions). Recommended clothing: Light jacket, long-sleeved shirt, rain gear.
Summer (June–August): Average 22.8–28.2°C, hot and humid, occasional thunderstorms. Common activities: Hot spring bathing, outdoor swimming, appreciating Mount Fuji views. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 19.3–14.9°C, cool and comfortable, more rainfall in September, drier weather after October. Common activities: Viewing autumn leaves, fruit picking. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): Average 9.0–7.3°C, cold and dry, occasional snowfall. Common activities: Skiing, hot spring therapy. Recommended clothing: Warm jacket, hat, gloves, scarf.
Yamanashi climatological average
Annual average temperature: approx. 17°C / Annual rainfall: approx. 1490 mm / Summer humidity: 70%–80% / Rainiest month: September
Yamanashi monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
6.4°C
27.7
February
7.3°C
60.7
March
11.3°C
126.3
April
16.1°C
148.9
May
19.1°C
194.4
June
22.8°C
232.7
July
28.2°C
116.7
August
28.2°C
132.8
September
26.1°C
245.9
October
19.3°C
107
November
14.9°C
69
December
9°C
27.8
Yamanashi weather for the next seven days
6/12
Friday
Moderate rain
24.1°C/17.9°C
6/13
Saturday
Patchy rain nearby
27.1°C/17.7°C
6/14
Sunday
Patchy rain nearby
28.1°C/19.4°C
6/15
Monday
Patchy rain nearby
21.8°C/18.2°C
6/16
Tuesday
Sunny
29.1°C/17.2°C
6/17
Wednesday
Sunny
26.7°C/19.8°C
6/18
Thursday
Moderate rain
20.1°C/17.6°C
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