Soma Onsen Tenpo no Yu
そうま温泉 天宝の湯
Compact day-use bathhouse in Soma with sauna and open-air bath
Day Use
YesClosed on the 3rd Tuesday of each month (the next day if it falls on a public holiday); the official site also lists the 1st Tuesday as a closed day in places, so check before visiting. The facility may also close temporarily for machine inspection.
Members pay 840 yen (adult) and 280 yen (child). Child rate covers age 3 to elementary school. Tax included.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
Relaxation space for after bathing
On-site or nearby parking available
About
A small, simple day-use bathhouse in Soma. There is an indoor bath, an open-air bath, a sauna and a cold plunge, so you can alternate hot and cold. The water is nearly clear with a golden tint and leaves the skin smooth. Shampoo and body soap are provided at the washing stations, and towels can be rented. Afterwards there is a restaurant and a rest area where you can lie down. Tattoos are not allowed.
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Last updated October 11, 2026