Chiisana Mori no Yu
森吉山温泉 小さな森の湯もりよしざんおんせん ちいさなもりのゆ
A river-side mixed open-air bath in the Akita mountains
Day Use
YesClosed on the third Wednesday of each month, plus occasional other irregular closures. After 15:00 the outdoor bath gives priority to overnight guests.
500 yen for elementary-school age and up; preschool children bathe free.
Bathing & Water
Uses natural hot spring water
Site labels the bath 源泉かけ流し (source-fed, non-recirculated); source temperature about 53°C, weakly alkaline.
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
The single outdoor bath can be reserved for private/exclusive use; otherwise it is shared mixed-gender bathing (see KONYOKU).
Shared bathing area for all genders
Reviewer (Oct 2025, post-reopening) confirms the single outdoor bath is mixed-gender with separate changing-room entrances; consistent with the site's day-use listing showing only one unisex outdoor bath (vs. explicit men's/women's split for the indoor bath).
Policies & Services
Welcomes children and families
A restaurant or dining room open to visitors, not only meals for overnight guests
No public restaurant for day-use visitors; only drinks are sold and outside lunch is explicitly allowed. Overnight-guest meals are served in a shared dining hall but are not open to the public.
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
Free towel provided for day-use drop-in visitors.
Views
Forest
RiverPrograms
About
A small inn near Moriyoshiyama in the mountains of Akita, Chiisana Mori no Yu draws sodium-calcium chloride-sulfate water. The open-air mixed bath in the forest is the draw, raw and relaxed, with that unmistakable atmosphere of a rural Tohoku onsen where nature is right at the edge of the tub.
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Last updated October 5, 2026