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Kaneman Yasuragi Center; Numata Okaya Onsen

Numata, Gunma, Japan
Kaneman Yasuragi Center; Numata Okaya Onsen
Location
Numata, Gunma, Japan
Water type
sodium chloride
Temperature
41 °C
pH
7.3

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
Effortless float
LowHigh

Dense, salty water — you float without effort.

SodiumChloruresBrome

Kaneman Yasuragi Center Numata Okaya Onsen is a thermal bathing and community wellness facility in Numata city, Tone District, Gunma prefecture, Japan, in the historic castle town at the confluence of the Tone, Katashina, and Usui rivers in the northern Gunma highlands where castle lords once controlled the strategic river crossings and mountain passes connecting the Kanto plain with the Echigo highlands across the snow mountains. Numata is the gateway to the Oze wetland plateau — Japan's most celebrated alpine wetland national park — and to the onsen spa districts of Katashina and Minakami, making the city a transit and service hub for outdoor and wellness tourism in the Tone River catchment. The Yasuragi Center's thermal bathing facility provides the Okaya Onsen mineral spring experience in the format of a community rest and wellness center, offering locals and mountain visitors the restorative benefits of Gunma's abundant hot spring waters in the traditional Japanese satoyama (agricultural-forested interface) landscape of the northern Kanto mountains.

Insider tip — Numata Okaya Onsen serves a city perched on a dramatic river terrace above the confluence of the Katashina, Tone, and Usui rivers, where Numata Castle was a contested clifftop fortress fought over by the Sanada, Hojo, and Uesugi clans during the Sengoku wars. The Kanman riverine gorge below the castle foundations is one of Gunma most spectacular natural canyon landscapes.
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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 sodium chloride water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.