Azumino Onsen

Azumino, Nagano (Chubu), Japan

Location: Azumino, Nagano (Chubu), Japan
Water type: silica
Temperature: 40 °C
pH: 7.2

Water profile

Thermicity

Sedative

40 °C

LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation

Balancing

LowHigh

Rich in trace elements — gentle on the skin.

Buoyancy

Standard buoyancy

LowHigh

Soft water — natural, classic buoyancy.

SiliceSodiumBicarbonates

Azumino Onsen is located in Azumino City, Nagano Prefecture, in the scenic Azumino valley between the Hotaka Mountains (a sub-range of the Northern Alps) and the Chikuma River, a landscape of rice paddies, wasabi farms, and the crystal-clear snowmelt streams of the Azusa and Takase rivers that emerge from Japan's highest mountain ranges to water this exceptionally productive agricultural valley. The siliceous thermal waters here complement a city internationally known for the Daio Wasabi Farm — Japan's largest wasabi plantation — and the Rokuryu Hot Springs, where multiple natural hot spring facilities are easily accessible from the city center. Bathing at Azumino Onsen in this mountain-valley setting, with the dramatic jagged peaks of the Hotaka Range as a backdrop and the scent of wasabi cultivation in the valley air, provides one of Nagano's most scenically spectacular and agriculturally distinctive onsen experiences.

Insider tip — Azumino Onsen sits in the broad alluvial plain of the Azusa River, framed by the soaring peaks of the Northern Japan Alps to the west. The silica waters here are particularly noted for their beautifying properties, and many establishments offer farm-to-table kaiseki dining featuring local wasabi and mountain vegetables. The cycling and walking paths of Azumino Art Hills and the wasabi farms make this a destination blending nature, culture, and thermal wellness. Early mornings yield clear views of the Hotaka massif from outdoor baths.

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