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Ganiba Onsen Nyuto

Semboku, Japan
Ganiba Onsen Nyuto
Location
Semboku, Japan
Water type
bicarbonate
Temperature
41 °C
pH
8.9

Water profile

Thermicity
Sedative
41 °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.

SodiumCOCalciumBicarbonate

Ganiba Onsen is one of the seven legendary ryokan of the Nyuto Onsen cluster, a remote thermal village buried in the beech forests of Akita Prefecture in northern Honshu. Reached only by a winding forest road that gradually strips away the modern world, the low-eaved wooden inn embodies the most elemental form of Japanese onsen culture, especially dramatic under the heavy winter snowfall of the Tohoku region.

The bicarbonate waters emerge at 41 °C with a strikingly alkaline pH of 8.9, lending the water an unusually silky, almost lotion-like quality on the skin that has made Nyuto Onsen famous throughout northern Japan. The outdoor baths—hewn from timber and moss-covered rock—open directly onto the steaming forest. Ganiba is cherished above all for the milky opacity of its spring water and for the profound sense of removal from everyday life that its forest setting provides.

Insider tip — Allow at least 2 hours to fully enjoy the bicarbonate waters of Semboku.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 41 °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: Décembre|Janvier|Février.