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Fujimi Onsen Nagano Highland

Fujimi, Nagano (Yatsugatake Highlands), Japan
Fujimi Onsen Nagano Highland
Location
Fujimi, Nagano (Yatsugatake Highlands), Japan
Water type
bicarbonate
Temperature
38 °C
pH
8

Water profile

Thermicity
Neutral
38 °C
LowHigh

Soothing — neither hot nor cold, perfect balance.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Fujimi Onsen is a mountain hot spring in the highland town of Fujimi, situated on the Yatsugatake piedmont in the eastern part of Nagano Prefecture at approximately 1,000 meters elevation, with dramatic views of the Yatsugatake volcanic chain whose multiple peaks give it the appearance of eight summits aligned against the alpine horizon. The bicarbonate thermal waters are skin-softening and gently therapeutic, providing relaxation amid one of Nagano's most picturesque highland plateaus — a landscape of birch forests, meadows, and clear mountain streams beloved by hikers, cyclists, and artists. The unpolluted highland air, rich natural scenery, and thermal bathing combine to make Fujimi Onsen a quintessential Shinshu high-country experience.

Insider tip — Fujimi Onsen sits at the foot of the Yatsugatake volcanic range at roughly 1000 meters, where cool highland air contrasts with the warm alkaline bicarbonate spring. The water is prized locally for its gentle carbonation and skin-conditioning effects, and the surrounding larch forests turn gold in October making the approach scenic. Mornings here are crystalline and quiet, with deer occasionally visible at the treeline.
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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 bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).