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Gunma
Top 10 Must-Do Experiences and Attractions in Gunma
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![[Winter Limited] 2-Day Karuizawa Tour | Karuizawa Prince Shopping Plaza, Approx. 50-Dish Christmas Buffet, & Hot Spring Hotel Stay | Departing from Ueno, Tokyo, and Shinjuku](https://image.kkday.com/image/get/c_fill%2Ch_153%2Cq_55%2Ct_webp%2Cw_272/s1.kkday.com/product_scm_30339/20260924072748_qKXYt/jpg)
![[Gunma/Maebashi] A touch of ancient romance! Create your own one-of-a-kind original magatama polished with rare Japanese silk! Perfect for a day trip from Tokyo!](https://image.kkday.com/image/get/c_fill%2Ch_153%2Cq_55%2Ct_webp%2Cw_272/s1.kkday.com/product_772112/20260922105133_CxwFo/jpg)
![[Gunma/Shima] Experience the dream of SUP on Lake Shima, famous for its 'Shima Blue' water!](https://image.kkday.com/image/get/c_fill%2Ch_153%2Cq_55%2Ct_webp%2Cw_272/s1.kkday.com/product_771922/20260918080359_g6Hps/jpg)
![[Gunma/Numata] Tone River Rafting! Free Photo Service](https://image.kkday.com/image/get/c_fill%2Ch_153%2Cq_55%2Ct_webp%2Cw_272/s1.kkday.com/product_771478/20260914032746_9c6D0/jpg)
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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 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
10/6
Tuesday
Sunny
23.9°C/13.5°C
10/7
Wednesday
Sunny
20.7°C/8.9°C
10/8
Thursday
Sunny
23.7°C/7.5°C
10/9
Friday
Sunny
22.8°C/8.9°C
10/10
Saturday
Sunny
23°C/9.3°C
10/11
Sunday
Sunny
24.4°C/9.8°C
10/12
Monday
Sunny
24.7°C/11.8°C
