Ayoro Spa
アヨロ温泉あよろおんせん
Day-use bathhouse on sodium chloride spring water by the Pacific coast
Day Use
YesClosed on an irregular basis, about once a month, with specific dates posted on the site's notice page.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
Shared bathing area for all genders
Policies & Services
Allows entry with visible tattoos
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
Wash stations are provided, but soap and shampoo are not free; bring your own or buy them at the front desk.
Relaxation space for after bathing
The large tatami rest room costs an extra fee per person, it is not included free with bathing.
On-site or nearby parking available
Highlights
Jet BathAbout
Ayoro Spa is a day-use bathhouse in Kojohama, part of the Kojohama onsen area on Hokkaido's Pacific coast. The indoor bath has separate hot and mid-temperature tubs plus a jet bath, and there's a rotenburo outside where you can hear the waves. The water is a sodium chloride spring drawn from 550 meters underground, known locally for leaving skin smooth. A small restaurant and a paid tatami rest hall are attached, so it works as a place to linger, not just pass through.
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Last updated September 29, 2026