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Yunomata Onsen

Yunomata, Akita, Tohoku, Japan
Yunomata Onsen
Location
Yunomata, Akita, Tohoku, 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

Yunomata Onsen lies in the remote mountain community of Higashinaruse in the highlands east of Yuzawa, a small agricultural settlement surrounded by the beech forests and volcanic ridgelines of the Ou Mountains where the traditional mountain village life of Akita's interior — characterized by heavy snowfall, subsistence agriculture, and the quiet social rhythms of a community shaped by isolation and natural abundance — has been maintained with unusual integrity in a landscape that development and depopulation have left relatively unchanged in its essential character. The nearby mountains of the Higashinaruse area shelter some of the finest remaining natural beech forests of the Tohoku region, their upper slopes transitioning to the alpine meadows and volcanic outcroppings of the Ou range's crest in a vertical ecological sequence that changes dramatically with the seasons from the profound silence of deep winter snow to the explosive growth of highland summer vegetation. The onsen's siliceous mineral waters, rising through the volcanic geology of the Ou range, provide deeply restorative thermal bathing in one of Akita's most genuinely remote and naturally intact mountain communities.

Insider tip — Yunomata Onsen occupies a secluded valley in the Ou Mountains of Akita, where cedar forests and swift streams define the landscape. The mildly bicarbonate waters at 40°C are gentle and suit long soaks. Deep winter brings meters of snow to this part of Tohoku, making the contrast of steaming outdoor pools against a white wilderness particularly memorable.
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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).