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Saijo Onsen Tokura

Chikuhoku, Nagano, Japan
Saijo Onsen Tokura
Location
Chikuhoku, Nagano, Japan
Water type
bicarbonate
Temperature
40 °C
pH
8

Water profile

Thermicity
Sedative
40 °C
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

Saijo Onsen Tokura is a traditional Japanese hot spring bath in the Tokura district, where the facility draws on local geothermal sources to provide naturally heated mineral waters whose therapeutic value has made this onsen a cherished institution in its rural community. The waters rise at temperatures suited to long, meditative soaking, offering the relaxation of muscles, improvement of circulation, and skin care benefits central to the Japanese onsen tradition. Saijo Onsen embodies the core principles of bathing as a mindful ritual — simplicity, immersion, and a quiet attunement to the warmth rising from the earth beneath.

Insider tip — Chikuhoku village in the Chikuma River highlands of Nagano is a mountain community accessible via the Shinonoi Line. Saijo Onsen Tokura draws alkaline bicarbonate water from deep mountain rock — skin emerges remarkably smooth after soaking.
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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.