Shogai Seishun no Yu Tsurutsuru Onsen
Okutama, Tokyo Metropolis, Japan
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- Location
- Okutama, Tokyo Metropolis, Japan
- Water type
- bicarbonate
- Temperature
- 40 °C
- pH
- 8
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesSodiumCalcium
Shogai Seishun no Yu Tsurutsuru Onsen is set in Okutama, in the mountains west of Tokyo. Its bicarbonate water, slightly alkaline, is kept at around 40°C and known locally for leaving skin smooth ("tsurutsuru"). The site offers an indoor bath, an outdoor bath and a sauna.
Insider tip — Tsurutsuru Onsen sits deep in the forested Okutama mountains west of Tokyo, accessible via a scenic mountain railway. The smooth, silky bicarbonate waters give the bath its name — tsurutsuru meaning slippery in Japanese — leaving skin exceptionally soft. Arrive early on weekends as this beloved day-trip destination fills quickly. The surrounding cedar forests offer excellent hiking before a restorative soak.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).