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Shikokuchuo Onsen

Shikokuchuo, Ehime, Shikoku, Japan
Shikokuchuo Onsen
Location
Shikokuchuo, Ehime, Shikoku, 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

Shikokuchuo Onsen is found in Shikokuchuo, a city whose very name — meaning 'Center of Shikoku' — reflects its position at the meeting point of Ehime, Kochi, Kagawa, and Tokushima prefectures in the Mishima-Kawanoe area where the Shikoku island's four administrative divisions converge around the Yoshino River watershed. The city is Japan's leading producer of specialty paper products including Japanese washi paper, tissue paper, and industrial paper grades, a manufacturing tradition that has made this unassuming city at the island's geographic center an unexpected powerhouse of the global paper industry whose annual output represents a significant proportion of Japan's total paper production. The surrounding landscape of the Nishimountains foothills and the broad Yoshino River plain provides an agricultural and forested backdrop to the paper mills that define the city's industrial identity. The onsen here draw on silica-rich geothermal springs from the complex geology of this multi-prefecture junction zone, providing mineral bathing at the literal center of Japan's most distinctively traditional island, where ancient Shikoku pilgrimage culture, modern paper industry, and the therapeutic tradition of hot spring bathing intersect.

Insider tip — Shikokuchuo Onsen occupies the eastern edge of Ehime at the junction of four prefectures, earning the city its name meaning Four-Province Center. The mildly saline waters serve a region renowned for paper manufacturing, where the Yoshino River's clear waters have supported hand-made washi production for centuries. A soak here pairs naturally with a visit to the Kamiya Paper Museum, which documents Shikoku's deep relationship with the craft.
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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 (idéal automne-hiver).