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Sun Olive Onsen

Shodoshima, Kagawa, Japan
Sun Olive Onsen
Location
Shodoshima, Kagawa, 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

Sun Olive Onsen is one of several named thermal springs on Shodoshima Island in Kagawa Prefecture—Japan's most celebrated olive-growing island, where the mild Seto Inland Sea climate and distinctive soil conditions produce olives of excellent quality in Japan's first commercially successful olive cultivation, established in 1908 when the government sought to diversify agricultural production on this sun-drenched island. The iodine-rich mineral waters carry the marine sedimentary signature of the Seto Inland Sea geology that underlies the island, delivering the antibacterial and skin-conditioning mineral benefits of iodine in a spring set amid the olive groves and small-scale farming landscape that gives Shodoshima its distinctive Mediterranean-reminiscent character. Bathing in Sun Olive's iodine spring water on Japan's olive island creates an unexpected conjunction of European agricultural heritage and Japanese volcanic mineral spring tradition on one of the Inland Sea's most charmingly distinctive islands.

Insider tip — Sun Olive Onsen on Shodoshima Island in the Seto Inland Sea draws iodine-rich sodium-chloride thermal water on the island most famous for its olive groves and soy sauce breweries. The saline water is ideally suited to recovery after cycling the island's hilly roads past terraced hillsides and traditional wooden architecture. The thermal facility overlooks the calm inland sea with its pine-forested islets, offering a quintessentially tranquil Setouchi experience. Pair your visit with a tasting at one of the island's historic soy sauce kura, whose aroma permeates entire neighbourhoods.
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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).