Jonan Tennen Onsen
Toyama, Toyama, Japan
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- Location
- Toyama, Toyama, Japan
- Water type
- thermal, sodium chloride
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Restorative
LowHigh
Loaded with major ions — the essential minerals (Ca, Mg).
Buoyancy
Effortless float
LowHigh
Dense, salty water — you float without effort.
SodiumChloruresBrome
Jonan Tennen Onsen welcomes visitors in Toyama, Toyama with thermal sodium-chloride water at 38°C, between an indoor bath, outdoor rotenburo and sauna.
Insider tip — 'Jonan Tennen Onsen' (south-of-the-castle natural onsen) in Toyama city. The city known for black ramen, transparent glass, and the spectacular Tateyama Kurobe Alpine Route. The deep artesian hot spring waters of the Toyama plain warm the citizens of this efficient, well-managed city year-round.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features thermal & sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.