Sounkyo Onsen, Kamikawa, Hokkaido
Kurodake-no-Yu, Sounkyo Onsen
A practical reference point after the Kurodake Ropeway or a hike, with low admission, a sauna, open-air bath and nearby transport.
Check before bathing
- Opening hours
- From 1 May to 31 October: opens at 10:00. Last admission 21:30. The town page lists closing at 22:30, while tourism and nearby official pages still show 22:00; use 21:30 as the safe last-entry time. Maintenance closures may occur.
- Tattoo policy
- The current first-party information reviewed does not confirm a tattoo policy. Check with the bathhouse before visiting.
Spring & water temperature
- Spring-source temperature
- Not published.
- Bathing temperature
- Not published.
- Spring source
- Sounkyo Onsen; the current official text page does not publish the individual spring name used by Kurodake-no-Yu.
- Spring classification
- Natural hot spring. The current tourism page describes it as low-salinity, mildly alkaline and hot; an up-to-date facility-specific chemical analysis is not available.
- pH
- Not published in the current material summarized here.
- Flow rate
- Not published in the current material summarized here.
- Water handling
- Kamikawa Town lists this municipal day-use facility with indoor and open-air baths, sauna and cold bath, and the facility describes itself as a 100% natural public hot spring. The current 2026 pages do not publish water addition, heating, circulation or disinfection for each pool.
Bathing indications
The facility lists general bathing indications including muscle pain, neuralgia, frozen shoulder and sensitivity to cold. These are not treatment guarantees.
Current 2026 pages do not provide complete pool-by-pool water-treatment conditions.
Kamikawa Town lists adult admission at ¥800 and child admission at ¥400. Use the 21:30 last-entry time when planning a late visit; check for maintenance notices.
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.
