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Oga Onsen

Oga, Akita, Japan
Oga Onsen
Location
Oga, Akita, 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

Oga Onsen sits on the rugged Oga Peninsula in Akita Prefecture, a dramatic cape jutting into the Japan Sea renowned for its striking coastal scenery and fierce winter storms. The peninsula is most celebrated as the homeland of Namahage, the fearsome demon-masked ritual recognized as UNESCO Intangible Cultural Heritage, where villagers in straw capes visit homes on New Year's Eve to drive away laziness and misfortune. Soaking in the alkaline sodium chloride waters here connects visitors to a fishing culture shaped by sea and tradition, with the Namahage Museum and cape viewpoints offering unforgettable cultural immersion.

Insider tip — Oga Onsen sits on the Oga Peninsula jutting into the Sea of Japan, famous for the Namahage demon folklore. The bicarbonate-rich waters soothe skin after brisk coastal winds. Visit in February during the Namahage Sedo Festival for a uniquely dramatic cultural backdrop.
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Nearby

Funagawa Onsen
Funagawa, Akita, Tohoku
Oga Onsen Akita
Oga, Akita
Oga Onsenkyo
Oga, Akita
Tenno Onsen Kurara
Katagami, Akita
Ogata Onsen
Ogata, Akita, Tohoku
Yuhi Onsen WAO
Oga, Akita

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).