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Koge Onsen Tottori

Koge, Tottori Prefecture, Japan
Koge Onsen Tottori
Location
Koge, Tottori Prefecture, 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

Koge Onsen, in the forested hills of Yazu district in Tottori Prefecture on the Sea of Japan coast, draws on bicarbonate thermal waters in the quiet San'in region — one of Honshu's least-visited and most historically layered coastal areas, where ancient Shinto traditions, paper-making heritage, and the dramatic Tottori Sand Dunes combine with a deeply traditional onsen culture. The naturally mineralised bicarbonate waters are used in the classic Japanese therapeutic bathing tradition, offering skin-softening alkaline properties particularly valued in the region's cooler Sea of Japan climate where winter winds and heavy snowfall make warming onsen especially prized. Tottori Prefecture's extraordinary combination of the San'in Geopark, Kurayoshi's preserved whitewashed storehouses, and the mysterious Mitoku-san wooden temple clinging to a cliff face make Koge Onsen a culturally rich spa destination in one of Japan's most authentically unhurried regions.

Insider tip — Koge Onsen sits in the lush Chugoku highlands of Tottori, where clear mountain streams meet alkaline bicarbonate waters. The setting is quintessentially rural Sanin, with ryokan that have hosted travelers on the old mountain roads for generations. Best visited in autumn when the surrounding maple forests turn crimson. Arrive early morning to enjoy the outdoor baths before the day-trippers arrive.
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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).