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Sawara Onsen

Katori (Sawara), Chiba Prefecture, Japan
Sawara Onsen
Location
Katori (Sawara), Chiba Prefecture, 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

Sawara Onsen is located in Katori City, Chiba Prefecture, near the historic town of Sawara — one of Japan's best-preserved Edo-period merchant towns, whose canal-lined streets of traditional earthen-walled storehouses (kura) and merchant houses have earned it the nickname "Little Edo" and designation as a Preservation District for Historic Buildings alongside the neighboring Katori Jingu, one of Japan's oldest and most important Shinto shrines. The siliceous thermal waters here complement a landscape of extraordinary historical depth, where the Kanto region's ancient commercial culture is preserved in the waterway townscapes and the ancient shrine forests of the Katori area. Bathing at Sawara Onsen provides a restorative conclusion to exploring the historic merchant canals and the sacred precincts of Katori Jingu, combining therapeutic mineral spring wellness with immersion in the Edo-period commercial heritage that made the Tone River watershed the economic heartland of historical Kanto.

Insider tip — Sawara Onsen sits near the Tone River lowlands in northern Chiba, where sodium-chloride waters sourced from deep sedimentary strata warm bathers year-round. The historic merchant quarter of Sawara, often called Little Edo, lies minutes away with its Edo-period canal-side warehouses. The combination of warm saline bath and a riverside stroll makes for an authentic countryside day trip from Tokyo.
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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).