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Gunma
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Gunma Weather, Climate and Best Time to Visit
Data source：Meteostat
Update date：2025-09
Gunma year round climate
- Spring (March–May): Average 44–60°F, the climate gradually changes from cold to warm, with increasing rainfall. March and April may still experience cold snaps. Common activities: cherry blossom viewing, hiking, hot spring trips. Recommended clothing: light jacket, long-sleeved shirt, add warm clothing in the mornings and evenings.
- Summer (June–August): Average 68–79°F, warm and humid climate, abundant rainfall, and frequent afternoon thunderstorms. Common activities: mountain hiking, water activities, sightseeing in summer resorts. Recommended clothing: light and breathable clothing, short sleeves, shorts, bring rain gear.
- Autumn (September–November): Average 49–74°F, pleasant and comfortable climate, changing from warm to cool, with decreasing rainfall. Common activities: maple leaf viewing, hiking, hot spring trips. Recommended clothing: long-sleeved shirt, light jacket, add warm clothing in the mornings and evenings.
- Winter (December–February): Average 33–40°F, cold and dry climate, low rainfall. Common activities: skiing, hot spring experiences. Recommended clothing: warm coat, sweater, scarf, gloves, hat.
Gunma climatological average
Annual average temperature: approx. 56.5°F / Annual rainfall: approx. 1323 mm / Summer humidity: 70%–80% / Rainiest month: August
Gunma monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
33.6°F
23.6
February
35.8°F
45.3
March
44.1°F
93.5
April
54.5°F
112.1
May
60.6°F
163.8
June
68.7°F
182.5
July
77.4°F
174.2
August
79.5°F
188.3
September
74.5°F
183.4
October
59°F
78
November
49.3°F
57.6
December
40.1°F
21
Gunma weather for the next seven days
12/4
Thursday
Patchy moderate snow
41.5°F/22.7°F
12/5
Friday
Light freezing rain
45.4°F/23.1°F
12/6
Saturday
Sunny
46.5°F/23.5°F
12/7
Sunday
Sunny
55.4°F/27°F
12/8
Monday
Sunny
55.1°F/31.6°F
12/9
Tuesday
Sunny
43.2°F/28.2°F
12/10
Wednesday
Sunny
44.1°F/25.1°F
