Senami Onsen, Murakami, Niigata Prefecture
Yumoto Ryusen Outdoor Baths
When open, Ryusen offers a much broader bathing lineup than nearby Iwafune for just ¥100 more. It was closed September 7–9, 2026 for well cleaning; check the latest notice before visiting.
Check before bathing
- Opening hours
- Normally 09:00–22:00; last admission 21:00. Adults ¥900; children ages 3 through elementary school ¥500. The facility was closed September 7–9, 2026 for spring-well cleaning; confirm current operations after those dates.
- Tattoo policy
- Tattoos and tattoo-like stickers are not allowed, according to the facility.
Spring & water temperature
- Spring-source temperature
- About 94°C at the source, according to the facility.
- Bathing temperature
- Not published.
- Spring source
- The facility's own spring, about 180 m underground; the current official page does not give a formal well name or number.
- Spring classification
- Sodium chloride spring; weakly alkaline and low-salinity.
- pH
- Not published.
- Flow rate
- Not published.
- Water handling
- The spring is about 94°C, so the facility says it adds water before bathing. It does not publish pool-by-pool circulation, disinfection or flow-rate details.
Bathing indications
The facility lists general bathing indications including neuralgia, muscle and joint pain, frozen shoulder, sensitivity to cold, fatigue and health maintenance. This is not a treatment guarantee.
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.
