Spring (March–May): 42–59°F 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): 67–77°F 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): 46–72°F 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): -33–35°F 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. 54.3°F / Annual rainfall: approx. 1421 mm / Summer humidity: 70%–80% / Rainiest month: June
Shimosuwa monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
30.9°F
15
February
32.7°F
63.7
March
42.1°F
107.7
April
54°F
126.5
May
59.5°F
166.1
June
67.6°F
218.8
July
76.1°F
207.3
August
77.9°F
115.2
September
72.3°F
191.7
October
56.8°F
101.4
November
46.9°F
84.8
December
35.8°F
23.1
Shimosuwa weather for the next seven days
10/19
Sunday
Patchy rain nearby
57.5°F/52.8°F
10/20
Monday
Moderate rain
63.1°F/41.9°F
10/21
Tuesday
Patchy rain nearby
52.2°F/42.5°F
10/22
Wednesday
Moderate rain
43.8°F/36.9°F
10/23
Thursday
Sunny
53.5°F/36.1°F
10/24
Friday
Partly Cloudy
49.9°F/36.3°F
10/25
Saturday
Sunny
52.8°F/39.9°F
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