Yunotsu Onsen, Oda, Shimane Prefecture
Sen'yakuto Yunotsu Onsen Motoyu
A direct, naturally self-flowing bath with a notably hot therapeutic-bathing feel. It is a poor fit if you need a shower or full amenities, and general visitors have limited access on Mondays and Thursdays.
Check before bathing
- Opening hours
- Adults ¥500; children aged one through elementary school ¥250. March–November 06:00–20:00, last admission 19:30; December–February 06:00–19:00, last admission 18:30. On Mondays and Thursdays, general visitors may bathe only from 06:00–08:00, last admission 07:30; later hours are reserved for members unless they cancel. The third Wednesday of November is an annual closure.
- Tattoo policy
- No current first-party tattoo rule was confirmed; contact the facility before visiting if needed.
Spring & water temperature
- Spring-source temperature
- 49.9–50.0°C, according to the operator's July 2024 data.
- Bathing temperature
- Hot pool 46–48°C; warm pool 43–44°C; beginner pool 38–40°C. Actual temperatures vary with outside conditions and bathing traffic.
- Spring source
- Motoyu Onsen.
- Spring classification
- Sodium chloride spring; low-salinity, neutral and hot spring.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- A naturally self-flowing spring travels about 1–1.6 m to the baths. The operator describes 100% source flow with no added water, heating, cooling or circulation. Disinfection details are not individually published.
The hottest bath can reach 46–48°C. First-time visitors should begin in the 38–40°C pool. There is no shower or standard set of bathing supplies. The general public cannot assume access after 08:00 on Mondays and Thursdays.
How to read a bath profile
Spring-source temperature and actual bathing temperature are kept separate. Each score is shown independently for comparison rather than collapsed into one overall score.
