Spring (March–May): 5.6–15.3°C on average, with a mild climate, but temperatures may fluctuate. Rainfall is relatively high. Common activities: Hiking, flower viewing (e.g., mountain cherry blossoms). Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): 19.8–25.5°C on average, with high humidity and frequent rainfall, particularly in June. Common activities: Playing by Lake Suwa, visiting local temples and shrines. Recommended clothing: Light and breathable clothing, rain gear.
Autumn (September–November): 8.3–22.4°C on average, with a pleasant and comfortable climate, and gradually decreasing rainfall. Common activities: Viewing autumn leaves, onsen trips. Recommended clothing: Light jacket, long-sleeved shirt.
Winter (December–February): -0.6–2.1°C on average, cold and dry, with low rainfall. Common activities: Skiing (requires travel to nearby areas), onsen experiences. Recommended clothing: Warm coat, hat, scarf, gloves.
Shimosuwa climatological average
Annual average temperature: approx. 12.4°C / Annual rainfall: approx. 1421 mm / Summer humidity: 70%–80% / Rainiest month: June
Shimosuwa monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-0.6°C
15
February
0.4°C
63.7
March
5.6°C
107.7
April
12.2°C
126.5
May
15.3°C
166.1
June
19.8°C
218.8
July
24.5°C
207.3
August
25.5°C
115.2
September
22.4°C
191.7
October
13.8°C
101.4
November
8.3°C
84.8
December
2.1°C
23.1
Shimosuwa weather for the next seven days
3/11
Wednesday
Sunny
5.9°C/-4.9°C
3/12
Thursday
Moderate snow
6°C/-4°C
3/13
Friday
Light snow
1.7°C/-3.2°C
3/14
Saturday
Sunny
7.2°C/-4.7°C
3/15
Sunday
Partly Cloudy
8.4°C/-3.7°C
3/16
Monday
Patchy rain nearby
9°C/-0.4°C
3/17
Tuesday
Partly Cloudy
8.7°C/-0.8°C
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