Right Onsen › Gunma › Katashina
Shirane Onsen - Large Open Air Bath
3.9★ · 534 Google ratings · Katashina, Gunma · 白根温泉 大露天風呂薬師之湯
✓ Day visitors✓ Outdoor bath✓ Kakenagashi
Before you go
Can you bathe here?
Day visitors
✓ YesFrom the facility's listing
Hours
10:00–17:30From the facility's listing
Closed
WednesdayWeekly closing days from the listing
Tattoos
? Call aheadNo policy stated in the 35 recent reviews we read
Price
¥1,000 adultConfirmed by recent visitor reports
How we know this
- Day visitors: Listed as a day-use onsen: a bath for day visitors by definition. No visitor review states otherwise. · from the listing category
- Price: Consistently 1000 yen per adult; several reviewers feel this is high for a small roadside facility compared to nearby alternatives. · 8 visitors, Sep 2025 – Aug 2026
The bath
What you’ll find
A roadside day-use bath near Nikko-Shirane popular with skiers and hikers, with one indoor and two large kakenagashi outdoor baths (no chlorination or recirculation) around 41-42C, heated changing-room floors, and a lounge, though several reviewers report a slippery mossy floor and bugs in the outdoor bath, and the soba restaurant several reviews mention no longer seems to be open.
Bath setup
Indoor baths
1.0Reported by two visitors
Outdoor bath
✓ YesLarge outdoor baths (split into two sections) are the facility's signature feature; multiple reviewers also note slippery moss on the floor and insects in the water.Confirmed by recent visitor reports
Outdoor baths
2.0Confirmed by recent visitor reports
View
ForestConfirmed by recent visitor reports
Spring water
Bath temperature
42°CConfirmed by recent visitor reports
Free-flowing (kakenagashi)
✓ FullFresh spring water flows continuously through the bath
How we know this
- Indoor baths: One indoor bath alongside the two outdoor baths. · 2 visitors, Nov 2025 – May 2026
- Outdoor bath: Large outdoor baths (split into two sections) are the facility's signature feature; multiple reviewers also note slippery moss on the floor and insects in the water. · 8 visitors, Sep 2025 – Aug 2026
- Outdoor baths: Two separate outdoor bath sections. · 3 visitors, Nov 2025 – May 2026
- View: The outdoor bath is surrounded by maple trees, especially scenic during autumn foliage. · 3 visitors, Apr 2026 – Nov 2025
- Bath temperature: The baths run a consistent 41-42C. · 4 visitors, Jan 2026 – Jul 2026
- Free-flowing (kakenagashi): Consistently and heavily documented as true kakenagashi with visible overflow, not recirculated. · 10 visitors, Sep 2025 – Jul 2026
Practical
What you need
Lockers
✓ FreeReported by two visitors
Payment
✕ Cash onlyCash only is accepted, and one reviewer warns large bills may be refused for lack of change.Reported by two visitors
Hair dryer
✓ YesReported by two visitors
Facilities
Rest area
✓ YesConfirmed by recent visitor reports
Restaurant
✕ NoReported by two visitors
How we know this
- Lockers: Free valuables lockers with keys are provided in the changing room. · 2 visitors, Apr 2026 – Dec 2025
- Payment: Cash only is accepted, and one reviewer warns large bills may be refused for lack of change. · 2 visitors, Mar 2026
- Hair dryer: Free hair dryers are provided. · 2 visitors, Oct 2025 – Dec 2025
- Rest area: A dim, cozy lounge with free massage chairs, blankets, and free tea; one reviewer, however, found the rest area unwelcoming. · 4 visitors, Oct 2025 – Mar 2026
- Restaurant: A soba restaurant is mentioned in older reviews, but two more recent visitors found it (and a foot bath and boiled-egg stand) no longer operating. · 2 visitors, Oct 2025 – Dec 2025
Timing
When to go
Quietest Thursday around 10:00. Busiest Sunday around 15:00.
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Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 10:00–17:30 |
| Tuesday | 10:00–17:30 |
| Wednesday | Closed |
| Thursday | 10:00–17:30 |
| Friday | 10:00–17:30 |
| Saturday | 10:00–17:30 |
| Sunday | 10:00–17:30 |
Closed Wednesday.
Getting there
How to get there
Nearest station
Sori26.0 km in a straight line; bus or taxi from the station
Address
4667 Higashiogawa, Katashina, Tone District, Gunma 378-0414From the facility's listing
Show a driver
白根温泉 大露天風呂薬師之湯The name in Japanese, for a taxi or at the counter
Phone
+81278-58-4126Japanese-speaking. For tattoos or private baths a call is the only sure answer
The map loads only when you ask for it and connects your browser to Google.
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Questions
Common questions
Can I visit Shirane Onsen - Large Open Air Bath without staying overnight?
Listed as a day-use onsen: a bath for day visitors by definition. No visitor review states otherwise.
How much does Shirane Onsen - Large Open Air Bath cost?
Consistently 1000 yen per adult; several reviewers feel this is high for a small roadside facility compared to nearby alternatives.
Is the water free-flowing spring water?
Consistently and heavily documented as true kakenagashi with visible overflow, not recirculated.
