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Gunma
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Gunma Weather and climate
Data source：Meteostat
Update date：2025-09
Gunma year round climate
- Spring (March–May): Average 6.7–15.9°C, 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 20.4–26.4°C, 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 9.6–23.6°C, 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 0.9–4.5°C, 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. 13.6°C / Annual rainfall: approx. 1323 mm / Summer humidity: 70%–80% / Rainiest month: August
Gunma monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
0.9°C
23.6
February
2.1°C
45.3
March
6.7°C
93.5
April
12.5°C
112.1
May
15.9°C
163.8
June
20.4°C
182.5
July
25.2°C
174.2
August
26.4°C
188.3
September
23.6°C
183.4
October
15°C
78
November
9.6°C
57.6
December
4.5°C
21
Gunma weather for the next seven days
10/11
Saturday
Patchy rain nearby
16.5°C/11.8°C
10/12
Sunday
Partly Cloudy
25.7°C/11.3°C
10/13
Monday
Patchy rain nearby
24°C/13.1°C
10/14
Tuesday
Moderate rain
17.3°C/12.2°C
10/15
Wednesday
Patchy rain nearby
25°C/10.8°C
10/16
Thursday
Moderate rain
15.4°C/10.8°C
10/17
Friday
Patchy rain nearby
18.3°C/10°C
