Gumma

PrefectureJapan, Asia

Gumma is a STATE in Japan, Asia.

Gunma Prefecture, nestled in the heart of Japan's main island of Honshu, is a captivating destination where dramatic natural landscapes meet rich cultural traditions. Often called the 'Roof of Kanto' due to its mountainous terrain, Gunma is famous for its world-class onsen (hot springs), particularly in Kusatsu, where steaming thermal waters bubble up in the town center. Outdoor enthusiasts flock to Minakami for thrilling white-water rafting, canyoning, and bungee jumping, while winter transforms the region into a premier skiing and snowboarding destination at resorts like Tanigawadake Tenjindaira. History buffs can explore the UNESCO World Heritage Tomioka Silk Mill, a testament to Japan's industrial revolution, and the historic Ikaho Stone Steps lined with traditional shops. The prefecture is also renowned for its agricultural bounty, producing succulent fruits and the prized 'Gunma Wagyu' beef. With majestic peaks like Mount Akagi and Mount Haruna framing serene lakes, Gunma offers a perfect blend of adventure, relaxation, and cultural immersion away from the urban crowds.

Best time to visit Gumma

April to May for pleasant spring weather and cherry blossoms; October to November for stunning autumn foliage in the mountains. December to March for skiing and snowboarding, with peak conditions in January-February. July-August is hot and humid but ideal for mountain escapes and festivals like the Tanabata celebrations. Avoid late June to early July (rainy season) for outdoor activities.

October

Now

Typical for October

Weather
Mild 12-20°C, autumn colors

Travel notes

Crowds
High
Prices
Peak

Best for foliage

Know before you go

Getting there

NRT

Narita International Airport

International

150 km away

HND

Tokyo Haneda Airport

International

120 km away

TAK

Takasaki Airport

Domestic

10 km away

Getting around

"The JR Joetsu and Hokuriku Shinkansen lines connect Takasaki to Tokyo (about 50 minutes) and beyond. Local JR and private railway lines (like Joshin Railway) serve major towns. Buses are essential for reaching onsen towns and remote areas; consider bus passes for tourists. Renting a car is highly recommended for exploring mountainous regions and rural attractions; major rental agencies are at Takasaki and Maebashi stations. Taxis are available but expensive. Popular navigation apps include Google Maps, Japan Travel by Navitime, and Yahoo! Japan Transit."

Stay connected

WiFi speed

30 Mbps

Mobile data

Excellent

WiFi

Widely available in cities and many onsen resorts

Local SIM

Local SIM available at major airports from $10

Calling code

+81

Stay safe

Overall

9/10

Very safe region. Scams are extremely rare.

Night safety

8/10

Very safe region. Scams are extremely rare.

Transport

9/10

Scam risk

2/10

"Gunma is extremely safe with low crime rates. Exercise normal precautions in cities like Maebashi and Takasaki. When hiking or engaging in adventure sports in areas like Minakami or the Japanese Alps, check weather conditions, use proper gear, and consider guided tours for risky activities. Be aware of volcanic activity warnings around Mount Asama. Road conditions in mountainous regions can be challenging in winter; use winter tires or chains. No specific areas to avoid, but be respectful of private property in rural locales. Scams targeting tourists are very rare."

Entry and health

Health information

"Gunma has excellent medical facilities, including Gunma University Hospital in Maebashi and Takasaki General Medical Center. No specific vaccinations are required beyond routine travel vaccines. Tap water is safe to drink. Be cautious when using onsen if you have high blood pressure, heart conditions, or are pregnant; follow posted guidelines. In rural mountainous areas, medical facilities may be limited, so carry necessary medications. Tick-borne diseases like Japanese Spotted Fever are rare but possible in forested areas; use insect repellent. Travel insurance is recommended."

Culture

Local customs

"Remove shoes before entering homes, ryokan, and some traditional restaurants. When using onsen, wash thoroughly before entering the bath, and do not wear swimsuits; tattoos may be prohibited at some facilities. Tipping is not customary; excellent service is expected. Be polite and quiet in public spaces. When visiting shrines or temples, follow purification rituals. Try local specialties like yakimanju (grilled buns) and konnyaku (konjac) dishes. Gift-giving is appreciated when visiting someone's home."
Japanese

Costs and practicals

Currency

Japanese Yen (JPY) · ¥

Cost level

Mid-range

Meals

$8-15 | a typical meal at a local restaurant costs $8-15

Hotels

$60-120 | budget hotels $60-80, mid-range $80-120 per night

Local transport

$2 | local bus ride ~$2, Shinkansen from Tokyo ~$30

Cost notes

Onsen ryokan stays can be more expensive, often including meals.

Timezone

Asia/Tokyo +09:00 (GMT)

More facts

Population

1,900,000

Area

6,362 km²

Government

Prefectural government with a governor and elected assembly

ISO code

10

Type

Prefecture

Frequently Asked Questions

Also known as: 群馬総社, Gunma-Sōja, 군마소자, Gumma-Sōja, Tomioka, Tomioka-chhi, Tomioka-chhī, domioka si, fu gang, fu gang shi, twmywka, Томиока, Томіока, توميوكا, تومی‌اوکا، گونما, 富岡, 富岡市, 도미오카 시

Major HubOnsenHikingSkiingUNESCO World HeritageNatureHot SpringsWinter SportsCultural Heritage