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Marunuma Onsen
4.2★ · 82 Google ratings · Katashina, Gunma · 丸沼温泉
Before you go
Can you bathe here?
Day visitors
✕ NoStated on the facility's website
Hours
Not publishedCheck the official site
Tattoos
? Call aheadNo policy stated in the 22 recent reviews we read or on the facility's website
Price
¥1,000 adultConfirmed by recent visitor reports
How we know this
- Day visitors: Day-use bathing is offered for 1000 yen, but only within a narrow window (around 14:00-20:00 per one visit); another visitor reports being turned away every time with a posted 'no day-use bathing' sign, so hours may be inconsistently enforced or seasonal. · stated on the facility's website, read 2026-09 · 3 visitors, Jun 2024 – May 2026 · visitors report Limited hours (3 visitors)
- Price: Day-use admission is consistently reported as 1000 yen. · 3 visitors, May 2019 – May 2026
The bath
What you’ll find
A remote, single lodge-style ryokan (environmental resort) on the shore of Lake Marunuma, with a distinctive bath overlooking a fish tank of trout and char; day-use bathing is offered but only during narrow, inconsistently-enforced afternoon hours.
Bath setup
Family bath
✓ YesStated on the facility's website
How we know this
- Family bath: stated on the facility's website, read 2026-09
Practical
What you need
Accessibility
Accessible parkingFrom the facility's listing. Bath access not confirmed
Facilities
Restaurant
✓ YesReported by one visitor
Lodging
✓ YesConfirmed by recent visitor reports
How we know this
- Restaurant: The lodge serves its own meals to guests; a separate nearby teahouse is noted as not worth expecting food from. · 1 visitor, Oct 2018
- Lodging: This is a single lakeside ryokan (Kankoso) offering overnight stays, priced from around 23,000 yen and up. · 3 visitors, Oct 2018 – Sep 2019
Getting there
How to get there
Nearest station
Sori28.6 km in a straight line; bus or taxi from the station
Address
4658-7 Higashiogawa, Katashina, Tone District, Gunma 378-0414From the facility's listing
Show a driver
丸沼温泉The name in Japanese, for a taxi or at the counter
Phone
+81278-58-2002Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
www.marunuma.comOfficial, in Japanese
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What matters
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Questions
Common questions
Can I visit Marunuma Onsen without staying overnight?
Day-use bathing is offered for 1000 yen, but only within a narrow window (around 14:00-20:00 per one visit); another visitor reports being turned away every time with a posted 'no day-use bathing' sign, so hours may be inconsistently enforced or seasonal.
How much does Marunuma Onsen cost?
Day-use admission is consistently reported as 1000 yen.
