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Gunma
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![[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)
![[Gunma, Maebashi] Limited to 1 group per day! Enjoy Japanese Culture: Traditional Silk Making & Yawata-yama Tumulus Tour & Origami <Includes Mulberry Tea & 2 Luxury Silk Frames to Take Home> Day trip from Tokyo OK!](https://image.kkday.com/image/get/c_fill%2Ch_153%2Cq_55%2Ct_webp%2Cw_272/s1.kkday.com/product_771144/20260909021201_EpmJx/png)
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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
9/25
Friday
Overcast
75.5°F/60.3°F
9/26
Saturday
Light rain shower
59.8°F/55.4°F
9/27
Sunday
Patchy rain nearby
64.8°F/56.4°F
9/28
Monday
Overcast
73.9°F/58.8°F
9/29
Tuesday
Overcast
76.3°F/59.2°F
9/30
Wednesday
Light rain shower
61.9°F/59.4°F
10/1
Thursday
Patchy rain nearby
77.2°F/59.9°F
