Gunma onsen guide

Kanto

Open this guide if you want mountain onsen atmosphere, famous bath-town energy, and a trip that feels like a real getaway instead of a quick stop.

Travel style: Mountain onsen town Best around: Kusatsu Updated: 17 Apr 2026

Back to Onsen shortlist See bath picks

Where this guide sits

Mountain onsen town

Mountain-town atmosphere is a core part of the experience, not just background scenery.
It works well when you want famous bath-town energy and stronger getaway feeling.
A good fit for travellers who want their onsen stop to feel memorable and distinct.

Why this stop works

Why travellers open Gunma

Classic mountain onsen energy, especially around Kusatsu, with strong town atmosphere.

Mountain-town atmosphere is a core part of the experience, not just background scenery.
It works well when you want famous bath-town energy and stronger getaway feeling.
A good fit for travellers who want their onsen stop to feel memorable and distinct.

Start with this bath

Kusatsu · Gunma

Otakinoyu

A strong practical Kusatsu choice for travellers who want a more facility-led public onsen stop.

Good for: Good for first-timers Access: A practical Kusatsu stop with more facility-style comfort than the open-air icons.

Get directions Check official rules

Also inside this guide

Sainokawara RotenburoKusatsu · Better with some prep
GozanoyuKusatsu · Good for first-timers

Bath shortlist

Public onsen picks in Gunma

Shortlist the baths that match your comfort level, access needs, and the kind of onsen day you want.

Swipe sideways for more onsen options.

Better with some prep Open-air public bath

Kusatsu

Sainokawara Rotenburo

A scenic Kusatsu anchor that gives Gunma one of the clearest open-air signatures in the pilot batch.

Price: ¥800 adult Hours: Apr-Nov 7:00-20:00, Dec-Mar 9:00-20:00; last admission 19:30. Access: Best experienced as part of a Kusatsu stay or a focused town walk.

Scenic rotenburoPublic bathDay-useKusatsu icon

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Rules and source details

Tattoos

Official English guidance says Kusatsu facilities generally welcome non-gang-related tattoos.

Private bath

No private bath is listed on the official Sainokawara page checked.

Kids / family

No family bath is listed, but Friday mixed-bathing nights welcome couples and families with swimwear or towels.

Check official rules

Official info

Price checked: 17 Apr 2026 Hours checked: 17 Apr 2026 Rules checked: 17 Apr 2026 Rules clarity: Partial

Official-source notes only. Recheck closures, last entry, and rule changes before you go.

Price and hours source Official English page

Good for first-timers Day-use onsen facility

Kusatsu

Otakinoyu

A strong practical Kusatsu choice for travellers who want a more facility-led public onsen stop.

Price: ¥1,200 adult Hours: 9:00-21:00, last admission 20:00. Access: A practical Kusatsu stop with more facility-style comfort than the open-air icons.

Day-usePublic bathFirst-timer candidateKusatsu

Get directions

Rules and source details

Tattoos

Official English guidance says Kusatsu facilities generally welcome non-gang-related tattoos.

Private bath

Private Shakunage baths are available to rent for ¥2,000 per hour.

Kids / family

Official English guidance says the private baths can be used by couples and families.

Check official rules

Official info

Price checked: 17 Apr 2026 Hours checked: 17 Apr 2026 Rules checked: 17 Apr 2026 Rules clarity: High

Official-source notes only. Recheck closures, last entry, and rule changes before you go.

Price and hours source Official English page

Good for first-timers Public bathhouse

Kusatsu

Gozanoyu

A central Kusatsu supporting pick that helps round out the town-first Gunma story.

Price: ¥900 adult Hours: Apr-Nov 7:00-21:00, Dec-Mar 8:00-21:00; last admission 20:30. Access: Very easy to combine with a central Yubatake-area walk.

Public bathDay-useTown-stroll onsenKusatsu

Get directions

Rules and source details

Tattoos

Official English guidance says Kusatsu facilities generally welcome non-gang-related tattoos.

Private bath

No private bath is listed; the middle hall can be rented for ¥2,000 per hour after bathing.

Kids / family

No family bath is listed on the official Gozanoyu page checked.

Check official rules

Official info

Price checked: 17 Apr 2026 Hours checked: 17 Apr 2026 Rules checked: 17 Apr 2026 Rules clarity: Partial

Official-source notes only. Recheck closures, last entry, and rule changes before you go.

Price and hours source Official English page

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