Yunominoyu Hot Spring
オートリゾート 苫小牧アルテン ゆのみの湯
A day-use hot spring bath at a Hokkaido campground resort
Day Use
YesClosed on the third Wednesday of each month as a rule, though the date can shift if it falls on a public holiday. Last admission is at 21:20.
Tomakomai residents aged 70 and over pay 400 yen with proof of residency and age. A 6-ticket adult coupon book costs 3,000 yen.
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
Welcomes children and families
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
A towel set for bathing can be bought at the shop.
Relaxation space for after bathing
Views
Mountains
ForestHighlights
Jet Bath
Lukewarm BathAbout
Yunominoyu is the day-use bathhouse at the Arten auto-camp and park-golf resort near Mt. Tarumae in Tomakomai, the place campers and park-golfers head to wash off afterward. The men's and women's sides swap wings each day, but both wings have an open-air bath facing the mountain and forest, a large indoor bath, a cooler soaking pool, a jacuzzi, a sauna and a cold plunge. The water is salty and runs a cloudy yellowish color, with a mineral scent some bathers describe as faintly metallic, and it warms you through in a way that lingers. A restaurant serves Hokkaido ingredients including Tomakomai's hokkigai surf clams, and there's a rest area, a tatami banquet hall and a shop.
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Last updated September 29, 2026