Spring (March–May): Average 6–17°C, mild climate but with a large temperature difference between day and night, increasing rainfall. Common activities: Cherry blossom viewing, hiking, mountain trekking. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 21–27°C, high temperature, high humidity, and frequent rain. Common activities: Summer resorts, water activities, enjoying mountain scenery. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 9–24°C, comfortable and pleasant climate, crisp autumn air, gradual change in foliage color. Common activities: Maple leaf viewing, hiking, hot spring bathing. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Winter (December–February): Average -0.3–2.6°C, cold and dry, high probability of snowfall. Common activities: Skiing, winter sports, enjoying snow scenes. Recommended clothing: Warm jacket, beanie, scarf, gloves, waterproof and warm shoes.
Nagano climatological average
Annual average temperature: approx. 13°C / Annual rainfall: approx. 1004 mm / Summer humidity: 70%–80% / Rainiest month: July
Nagano monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
-0.3°C
37.7
February
0.9°C
43.3
March
6°C
76.7
April
12.9°C
83.7
May
16.6°C
108.3
June
21.3°C
94.7
July
25.7°C
141.3
August
27°C
115
September
23.9°C
138.7
October
15.1°C
64
November
9.2°C
70.7
December
2.6°C
30.7
Nagano weather for the next seven days
10/13
Monday
Patchy rain nearby
19.2°C/15.7°C
10/14
Tuesday
Heavy rain
19.3°C/13.1°C
10/15
Wednesday
Patchy rain nearby
22.4°C/9.5°C
10/16
Thursday
Heavy rain
16.4°C/11.8°C
10/17
Friday
Patchy rain nearby
21.8°C/10.8°C
10/18
Saturday
Patchy rain nearby
21.9°C/9.5°C
10/19
Sunday
Patchy rain nearby
15.5°C/9.7°C
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