Tamamiya Onsen Bogaku no Yu
Fujimi, Nagano, Japan
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- Location
- Fujimi, Nagano, Japan
- Water type
- iron-rich
- Temperature
- 38 °C
- pH
- 6.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
FerBicarbonatesManganèse
Located in Fujimi, Nagano Prefecture, Tamamiya Onsen Bogaku no Yu draws iron-rich water at 38°C. Indoor baths, an outdoor rotenburo and a sauna make up this local hot-spring bathhouse.
Insider tip — Tamamiya Onsen Bogaku no Yu sits on the Yatsugatake piedmont in Fujimi, Nagano, where the volcanic range meets the Suwa basin with sweeping views toward the Southern Alps. The iron-rich mineral waters from deep granite fissures carry earthy warmth prized by hikers descending from Yatsugatake trails. The rotenburo outdoor bath faces the mountain panorama, making sunset soaks particularly memorable. The onsen is compact and community-focused, with a loyal local clientele of farmers and outdoor enthusiasts.
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 iron-rich water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).