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Tsushima Island Onsen

Tsushima Island, Nagasaki Prefecture, Japan
Tsushima Island Onsen
Location
Tsushima Island, Nagasaki 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

Tsushima Island Onsen is located on Tsushima, a mountainous island in the Korea Strait between Kyushu and the Korean Peninsula — so close to South Korea that Korean tourists make up the majority of visitors and Tsushima has become known as 'the island where Japan and Korea meet,' with a history of cultural exchange, diplomatic missions, and maritime trade connecting the two civilisations over 2,000 years. The chloride-rich coastal hot spring waters draw from geothermal resources in the island's ancient granite mountain geology, providing warm saline baths in an island of extraordinary natural beauty where over 90% of the land is covered by dense sub-temperate forest, and the endemic Tsushima leopard cat (Tsushima yamaneko) roams the mountain ridges. Tsushima's profound geographical position between two civilisations, its pristine natural environment, and its coastal hot spring tradition make it one of the most geopolitically and ecologically distinctive onsen destinations in the entire Japanese archipelago.

Insider tip — Tsushima Island Onsen rises from beneath a mountainous island positioned midway between Kyushu and Korea in the Korea Strait. Tsushima's dramatic fjord-like bays and ancient Shinto shrines give the soak a frontier, end-of-the-world atmosphere. The sodium-chloride spring carries a deep oceanic salinity echoing the surrounding sea, and mist rolling in from Korean waters often wraps the outdoor tubs.
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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).