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Yoshii Onsen Gunma

Yoshii, Gunma, Japan
Yoshii Onsen Gunma
Location
Yoshii, Gunma, 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

Takasaki, the largest city in Gunma Prefecture and one of the most important transportation hubs in the Kanto region, is celebrated as the city of the Daruma doll — the round red good-luck effigy inspired by the Bodhidharma whose production at the Shorinzan Darumaji Temple has made Takasaki the supplier of approximately 80% of all Daruma dolls produced in Japan. Yoshii Onsen Gunma draws on sodium and bicarbonate thermal waters from the geological resources of the Takasaki basin, offering restorative baths in the greater Takasaki urban area where the Daruma craft tradition, the Gunma Symphony Orchestra, and the excellent Shinkansen access to Tokyo create a lively and culturally confident spa destination. The Shorinzan Darumaji Temple's spectacular Daruma Fair held in January, the Kannon statue of Takasaki — one of Japan's largest white concrete Kannon at 41 metres — and the Gunma Music Centre designed by Italian architect Antonin Raymond create an appealing mix of folk craft, spiritual tradition, and modernist architecture in this vibrant Gunma city.

Insider tip — Yoshii Onsen sits at the confluence of the Kannagawa and Yoshii rivers in eastern Gunma, where bicarbonate springs have served local farmers and merchants since the Edo period. The water's gentle alkalinity is reputed to brighten skin tone over repeated visits. River fishing for ayu sweetfish is a beloved summer activity complemented by an evening soak. The town's stone-paved historic streets and traditional wooden bathhouses create an authentic Kanto countryside atmosphere.
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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).