Jogen no Tsuki
湯亭 上弦の月ゆてい じょうげんのつき
13 themed private baths with indoor and outdoor soaking at Sankawa Onsen
Day Use
YesClosed on the second Tuesday and Wednesday of each month for equipment checks (dates may shift in some months).
Per room (90 min), 3,000–5,200 yen depending on room. Web reservation discount: 200 yen off. Add-on: extra adult 600 yen, child 250 yen.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
Shared bathing area for all genders
Policies & Services
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
Relaxation space for after bathing
On-site or nearby parking available
Programs
About
Jougen no Tsuki (上弦の月) is a private-bath-only facility at Sankawa Onsen in Kumamoto, built beside a clear stream in 2008. All 13 rooms are reserved exclusively for your group, and each one has a distinct theme drawn from traditional Japanese color names, paired with both an indoor bath and an open-air bath. The water feels silky and smooth on the skin, with none of the sharpness that sulfur springs carry. Some rooms have a terrace, some open onto a small garden, and most include an anteroom to rest in before or after bathing.
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Last updated October 7, 2026