Yonezawa Onsen

Yonezawa, Yamagata (Tohoku), Japan

Location: Yonezawa, Yamagata (Tohoku), 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

Yonezawa Onsen is a welcoming hot spring in the historic castle city of Yonezawa, situated in the Okitama basin of southern Yamagata Prefecture, celebrated as the seat of the powerful Uesugi clan — one of Japan's greatest samurai dynasties, whose lord Uesugi Kenshin was considered the finest military commander of the Sengoku era and whose descendants transformed Yonezawa into a model domain of Confucian learning and agricultural development. The siliceous thermal waters provide skin-softening and restorative warmth in a city whose exceptional historical identity is reflected in the Uesugi Shrine, the castle park's spring cherry blossoms, and the famous Yonezawa beef — regarded alongside Matsuzaka and Kobe as one of Japan's three great wagyu beef brands. This cultural and gastronomic richness makes Yonezawa Onsen a comprehensively rewarding southern Yamagata destination.

Insider tip — Yonezawa Onsen draws from alkaline bicarbonate springs near the historic castle town of Yonezawa, domain of the legendary Date clan in the Yamagata mountains. The 40°C waters have a silky quality that locals associate with relieving joint stiffness after cold winters, which can push temperatures well below -10°C. Several ryokan in the Onogawa and Shirataka areas serve seasonal Yonezawa beef alongside onsen baths, making a luxurious regional pairing. Autumn leaves along the Ogi River valley just outside town provide a stunning backdrop.

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