Shiobara Oami Onsen, Nasushiobara, Tochigi
Yumori Tanakaya Outdoor Baths (Day Use)
A river-valley soak with strict day-use days and clothing rules
Property overview
Overview
Tanakaya's outdoor baths sit in a wooded gorge and use three of the inn's own springs. Day use is limited to Thursdays, Saturdays, Sundays and public holidays, and only the outdoor baths are included. Part of the bathing area has been closed since February 10, 2026, with the closure expected to last about two years.
Spring & water temperature
- Spring-source temperature
- 61.7°C at the source
- Bathing temperature
- Not published; fixed temperatures for the day-use outdoor baths are not listed
- Spring source
- Three of the inn's own Oami Onsen springs
- Spring classification
- Sodium-calcium sulfate spring (low-tonicity, neutral, high-temperature spring)
- pH
- 7.2
- Flow rate
- 200 L/min across the inn's three springs, according to the inn
- Water handling
- The inn describes all baths as 100% free-flowing spring water. Day visitors can use the outdoor baths only, not the indoor lookout bath. Since February 10, 2026, part of the outdoor area has been closed for safety during upstream power-station renovation; the inn expects the closure to last about two years.
- Analysis date
- 2017
Bathing indications
The inn lists general bathing indications and a history of therapeutic bathing. These are onsen information, not a guarantee of treatment.
Admission is ¥1,650 for adults and includes a rental bathing wrap and face towel. Guests aged six and over must wear a bathing wrap, yukata-style bathwear or swimsuit. There are no washing facilities at the outdoor baths. On September 7, 2026, regular day use was unavailable because it was a Monday.
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Meals
Check meal times before booking.
For allergies or other dietary requirements, contact the property before booking to confirm what can be accommodated.
How ryokan meal plans workLocation & access
Check the last leg of the journey.
The outdoor baths are reached by descending from the inn toward the gorge. This involves more walking and uneven terrain than a standard indoor day-use bath; check current access conditions before setting out.
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