Nagano City Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Nagano City year round climate
Spring (March–May): Average 42–62°F, mild climate, but early spring can still be cold, with occasional rain. Cherry blossoms start blooming in March, and April to May is the best time to see them. Common activities: Cherry blossom viewing, hiking, hot spring trips. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 69–80°F, hot and humid, with more rainfall, especially in July, which is the rainiest month. Common activities: Outdoor activities, mountain climbing, visits to summer resorts. Recommended clothing: Breathable clothing, light shorts or skirts, sun hat, rain gear.
Autumn (September–November): Average 48–60°F, cool and comfortable, with vibrant autumn colors, making it a great season for viewing autumn leaves. Occasional rain, but the overall climate is pleasant. Common activities: Viewing autumn leaves, hot springs, mountain climbing. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -32–36°F, cold and dry, with occasional snowfall. It's the season for skiing and enjoying winter sports. Common activities: Skiing, hot springs, winter festivals. Recommended clothing: Warm jacket, hat, gloves, scarf, thermal underwear.
Nagano City climatological average
Annual average temperature: approx. 55.4°F / Annual rainfall: approx. 1004 mm / Summer humidity: 70%–80% / Rainiest month: July
Nagano City monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
31.5°F
37.7
February
33.6°F
43.3
March
42.8°F
76.7
April
55.2°F
83.7
May
61.9°F
108.3
June
70.3°F
94.7
July
78.3°F
141.3
August
80.6°F
115
September
75°F
138.7
October
59.2°F
64
November
48.6°F
70.7
December
36.7°F
30.7
Nagano City weather for the next seven days
2/17
Tuesday
Light freezing rain
40.6°F/25.8°F
2/18
Wednesday
Moderate or heavy snow showers
44.9°F/24.8°F
2/19
Thursday
Patchy moderate snow
35.1°F/21.3°F
2/20
Friday
Sunny
43.7°F/17.6°F
2/21
Saturday
Sunny
49.3°F/23.1°F
2/22
Sunday
Sunny
58.6°F/27.7°F
2/23
Monday
Patchy rain nearby
48.5°F/33.9°F
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