ThermaeExplore the map →

Chikuma Onsen Nagano

Chikuma, Nagano, Japan
Chikuma Onsen Nagano
Location
Chikuma, Nagano, Japan
Water type
bicarbonate
Temperature
41 °C
pH
8

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.

BicarbonatesSodiumCalcium

Chikuma, along the Chikuma River in central Nagano Prefecture, is a large agricultural municipality formed from the merger of several communities in the Nagano basin whose fertile river terrace soils produce famous Nagano apples, Nagano grapes, and the peaches that have made the Chikuma River valley one of Japan's most productive stone and pome fruit regions. Chikuma Onsen Nagano draws on sodium and bicarbonate thermal waters from the geothermal resources of the Nagano basin mountain zone, providing restorative baths in a river valley municipality surrounded by the orchard landscapes and traditional Nagano farming culture that has sustained this productive river plain for centuries. The Chikuma River cycling trails through orchard landscapes, the Naoeji Temple with its Zenkoji-connected sacred heritage, and the extensive fruit picking experiences in the Chikuma apple and grape orchards during the autumn harvest season create a pleasantly seasonal and agricultural spa destination in central Nagano Prefecture.

Insider tip — Chikuma Onsen lies along the Chikuma River corridor in central Nagano, where bicarbonate springs emerge from the river terrace sediments. The water's silky texture and neutral pH make it exceptionally gentle for sensitive skin. This working-class spa town has preserved an authentic, unhurried bathing culture far from tourist crowds. Evening baths are popular among local farmers returning from the surrounding vineyards.
Find hotels nearby →Tickets & activities →See the map & practical info →

Nearby

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: Toute l'année (idéal automne-hiver).