Oirase Keiryu Onsen

Oirase, Towada, Aomori (Japan), Japan

Location: Oirase, Towada, Aomori (Japan), 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

Oirase Keiryu Onsen is a riverside hot spring set along the legendary Oirase Gorge in Towada city, Aomori Prefecture — a 14-kilometer stream corridor regarded as one of Japan's most beautiful natural walkways, where the crystal-clear Oirase River cascades through a primeval beech and oak forest of extraordinary beauty, passing over moss-covered boulders and waterfalls celebrated by photographers throughout the year. The siliceous thermal waters provide skin-softening warmth in a riverside setting of incomparable sylvan beauty, with seasonal color ranging from fresh spring green to the vivid crimson-and-gold of the Tohoku autumn foliage. Bathing in the onsen beside the sound of the rushing Oirase River, surrounded by the ancient forest left completely undisturbed, is considered one of Japan's most atmospherically immersive hot spring experiences.

Insider tip — Oirase Keiryu Onsen sits along the famous Oirase Gorge in Aomori prefecture, one of Japan's most celebrated forest stream walks, where beech forest cathedral canopy shades a river carved from ancient volcanic lakebed deposits of Towada caldera. The bicarbonate waters here complement a soak with the sound of rushing gorge water audible from bathing rooms. Autumn foliage from mid-October to early November transforms the gorge into a spectacle of crimson and gold. Access is by shuttle bus from Towada lake to reduce traffic in this protected national park area.

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