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Gunma 1

Gunma

Gunma Prefecture is located in the Kanto region of Japan and is home to rich natural scenery and diverse hot spring towns. This is an ideal place for cherry blossom viewing, maple viewing and skiing. The main attractions in Gunma Prefecture include Kusatsu Onsen, Shiman Onsen, Minakami Onsen, Haruna Mountain, and Ikaho Onsen. Whether it's cherry blossoms in bloom in spring, summer resorts in summer, maple leaves in autumn, or skiing in winter, you can find a suitable travel experience in Gunma Prefecture.

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Best time to visit Gunma

Data source: Meteostat・Last updated: 2025-09

Weather in Gunma throughout the year

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.

Weather in Gunma

Annual average temperature: approx. 13.6°C / Annual rainfall: approx. 1323 mm / Summer humidity: 70%–80% / Rainiest month: August

Gunma weather by month

MonthJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Temperature0.9°C2.1°C6.7°C12.5°C15.9°C20.4°C25.2°C26.4°C23.6°C15°C9.6°C4.5°C
Rainfall (mm)23.645.393.5112.1163.8182.5174.2188.3183.47857.621

7-day weather forecast for Gunma

Date11/9Monday11/10Tuesday11/11Wednesday11/12Thursday11/13Friday11/14Saturday11/15Sunday
WeatherOvercastOvercastSunnySunnySunnyCloudyPatchy rain nearby
High12.7°C9.8°C13.7°C14.7°C20.3°C18.3°C16.6°C
Low3.9°C2.9°C1.3°C0.6°C4.3°C4.4°C6.8°C

Gunma travel FAQs and useful info

What is the best season to visit?

The best tourist seasons in Gunma Prefecture are cherry blossom viewing in spring, maple viewing in autumn and skiing in winter.

What are the must-visit attractions?

Must-visit attractions include Kusatsu Onsen, Shiman Onsen, Minakami Onsen, Mount Haruna, and Ikaho Onsen.