Kawaji Onsen, Nikko, Tochigi Prefecture
Kawaji Onsen Yakushi-no-Yu
The riverside source-flowing rock baths are a signature Kawaji Onsen experience, but the entire facility has been closed since 2 June 2026 because of equipment failure, with no reopening date announced. Do not include it in an itinerary until a new notice confirms reopening.
Facility photos
Check before bathing
- Opening hours
- Closed since 2 June 2026 because of equipment failure; reopening date not announced. The normal schedule, when operating, is 10:00–20:00 with last admission at 19:30. The mixed open-air bath normally closes at 18:00 and is closed from 1 December through 31 March; the facility normally closes Wednesdays, moving the closure to Thursday when Wednesday is a public holiday. These hours are not currently usable.
- Tattoo policy
- The current city and tourism pages reviewed do not confirm tattoo rules for the regular baths, mixed open-air bath or private bath. Check with the facility after it reopens.
Spring & water temperature
- Spring-source temperature
- Not published for this facility.
- Bathing temperature
- Not published as a fixed temperature. The tourism site describes the mixed open-air bath as relatively cool, but gives no numeric setting.
- Spring source
- A natural spring used by Yakushi-no-Yu in Kawaji Onsen; the current official pages reviewed do not identify a well or source number.
- Spring classification
- Simple hot spring; weakly alkaline and low-salinity.
- pH
- Not published for this facility; no figure is inferred from the weakly alkaline classification.
- Flow rate
- Not published for this facility.
- Water handling
- Nikko's tourism site describes it as a riverside communal bath using source-flowing water. The current official pages do not provide complete treatment details for each pool, so no conditions beyond that description are inferred.
Bathing indications
Nikko City lists general bathing indications such as neuralgia, joint pain and chronic digestive conditions. These are not treatment guarantees.
The tourism site describes the communal bath as source-flowing. Complete pool-by-pool details on water addition, heating, circulation and disinfection are not published.
The facility has been closed since 2 June 2026 because of equipment failure; reopening is undetermined. Before the closure, the revised non-resident adult admission was ¥1,000, child admission ¥700, and private baths cost ¥4,000 for 50 minutes. The sauna had already been out of service before the full closure. Do not treat the usual prices or hours as currently available. Tattoo policy is unconfirmed.
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.
