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Shinano Onsen Nagano Omachi

Omachi, Nagano (Northern Alps gateway), Japan
Shinano Onsen Nagano Omachi
Location
Omachi, Nagano (Northern Alps gateway), 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

Shinano Onsen in Omachi is a mountain hot spring in northern Nagano Prefecture, the gateway to the Tateyama Kurobe Alpine Route — Japan's most spectacular mountain crossing, traversing the Northern Alps via ropeway, cable car, and trolley bus through landscapes of perpetual snow corridors and alpine lakes at over 2,400 meters elevation. The bicarbonate thermal waters provide warmth and skin-nourishing benefits after the physical exertion of the alpine crossing or the challenging trekking routes of the adjacent Chubu Sangaku National Park. The deep waters of Lake Aoki near Omachi — famed for its extraordinary clarity and trout fishing — and the surrounding Azumino artisan community add considerable regional character to the onsen experience.

Insider tip — Omachi serves as the northern gateway to the Tateyama-Kurobe Alpine Route and its onsen provides welcome relief for hikers descending from some of Japan's most dramatic mountain terrain. The bicarbonate spring waters are softly alkaline, cooling inflammation from demanding alpine trails and easing the transition back to valley life. The Black Four Lakes in the surrounding Shinano Omachi valley area add scenic forest walks between soaks.
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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 (idéal automne-hiver).