Sunpu Tennen Onsen; Tenjin no Yu
Shizuoka, Shizuoka, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Shizuoka, Shizuoka, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Sunpu Tennen Onsen; Tenjin no Yu is located in Shizuoka city, Shizuoka Prefecture. The sodium-chloride water reaches 41°C. The bathhouse includes an indoor bath, an outdoor bath (rotenburo) and a sauna.
Insider tip — In historic Sunpu, the castle city where Tokugawa Ieyasu spent his retirement years after unifying Japan, Tenjin no Yu (heavenly god waters) channels natural sodium-chloride springs beneath the old Tokaido highway; the proximity to Sunpu Castle ruins adds feudal grandeur to this urban onsen experience.
Nearby
Higashi Shizuoka Tennen Onsen; Yunoki no Sato
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Shizuoka Suruga Onsen
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Naka Izu Onsen Kusanagi no Yu
Izu, Shizuoka
Abekawa Onsen Shizuoka City
Abekawa, Shizuoka City
Shizuoka Aoi Onsen
Shizuoka (Aoi Ward), Shizuoka Prefecture, Japan
Shizuoka Shimizu Onsen
Shimizu, Shizuoka Prefecture
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 41 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.