Asama Onsen

Matsumoto, Nagano, Japan

Location: Matsumoto, Nagano, 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

Asama Onsen is a hot spring resort in the city of Matsumoto, Nagano Prefecture, in the mountainous heart of central Japan. One of the city's traditional bathing areas, it is fed by naturally warm, bicarbonate mineral waters long used in the Japanese onsen tradition. Set near the Northern Japan Alps, it offers a relaxing thermal experience within easy reach of historic Matsumoto and its famous castle.

Insider tip — Asama Onsen spreads across the lower slopes of the Northern Alps outside Matsumoto city, a historic hot-spring quarter that has hosted artists and literary figures since the Edo period. The bicarbonate-rich waters are lightly alkaline with a silky texture that leaves skin noticeably softer. The narrow lanes of the onsen district are lined with century-old ryokan whose wooden facades glow amber at dusk. After bathing, walk ten minutes to the Matsumoto City Museum of Art to see Yayoi Kusama's luminous outdoor installations.

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