Spring (March–May): Average 10.1–18.1°C, mild climate with gradually increasing rainfall. March sees cherry blossoms in full bloom, making it an ideal time for viewing them. Common activities: Cherry blossom viewing, hiking, mountain climbing. Recommended clothing: Light jacket, long-sleeved shirt, comfortable shoes.
Summer (June–August): Average 22.0–27.5°C, hot and humid, with the most rainfall in June; be prepared for rain. Common activities: Visiting summer resorts, outdoor swimming. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 13.3–25.0°C, comfortable and pleasant climate, with more rainfall in September. Common activities: Maple leaf viewing, hiking, onsen trips. Recommended clothing: Comfortable long-sleeved shirts, light jackets, warm clothing.
Winter (December–February): Average 4.3–6.7°C, cold and dry with less rainfall. Common activities: Skiing, onsen bathing. Recommended clothing: Warm jacket, beanie, scarf, gloves.
Asama climatological average
Annual average temperature: approx. 16°C / Annual rainfall: approx. 1457 mm / Summer humidity: 70%–80% / Rainiest month: June
Asama monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
4.3°C
42.9
February
5.6°C
71.6
March
10.1°C
119.9
April
15.2°C
142.7
May
18.1°C
183.8
June
22°C
216.1
July
27°C
108.4
August
27.5°C
98.8
September
25°C
204.1
October
18.2°C
131.2
November
13.3°C
93.1
December
6.7°C
45.2
Asama weather for the next seven days
4/4
Saturday
Moderate rain
17.3°C/13.3°C
4/5
Sunday
Patchy rain nearby
23°C/16.2°C
4/6
Monday
Overcast
20.2°C/14.6°C
4/7
Tuesday
Moderate rain
14.9°C/10.5°C
4/8
Wednesday
Partly Cloudy
15.7°C/8.8°C
4/9
Thursday
Patchy rain nearby
20.4°C/14.1°C
4/10
Friday
Partly Cloudy
20.6°C/14.1°C
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