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
10/23
Thursday
Partly Cloudy
17.5°C/12.8°C
10/24
Friday
Patchy rain nearby
15.6°C/14.1°C
10/25
Saturday
Patchy rain nearby
16.8°C/14.4°C
10/26
Sunday
Heavy rain
16.7°C/15.7°C
10/27
Monday
Patchy rain nearby
20.3°C/15.6°C
10/28
Tuesday
Patchy rain nearby
20.3°C/13.8°C
10/29
Wednesday
Partly Cloudy
15.8°C/12.8°C
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