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Soma Onsen Extended

Soma, Fukushima, Japan
Soma Onsen Extended
Location
Soma, Fukushima, Japan
Water type
sodium chloride
Temperature
40 °C
pH
7.3

Water profile

Thermicity
Sedative
40 °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

Soma, on the Pacific coast of northern Fukushima Prefecture, is home to the Soma Nomaoi — one of Japan's three great mounted festivals, a spectacular samurai cavalry event held each July when hundreds of horsemen in full Heian-period battle armour compete in ancient equestrian rites honoring the cavalry tradition of the Soma clan lords who ruled this northern Fukushima coastal domain for five centuries. Soma Onsen Extended draws on chloride-rich coastal thermal waters from the marine geological formations of the northern Fukushima Pacific coast, offering warming maritime baths in a city whose deep samurai and equestrian heritage creates a uniquely theatrical historical atmosphere along the rugged Hamadori coastal plain. The Soma Nomaoi Festival's thundering cavalry charges, the traditional horse-rearing culture of the Soma plain that has persisted since feudal times, and the fresh Pacific seafood of the Hamadori fishing ports recovering with remarkable resilience after the 2011 tsunami create a destination of extraordinary historical and human drama on the Fukushima coast.

Insider tip — Soma faces the Pacific coast of northern Fukushima, a region that combines an ancient samurai horse festival tradition with a rugged seaboard character. Sodium-chloride springs here tap marine sediment aquifers close to the coast, yielding a salty, body-warming water that is especially restorative after exposure to the cold Pacific winds. The Soma Nomaoi festival in July, featuring mounted samurai in full armor, is a vivid spectacle unique to this stretch of the Tohoku coast. Onsen facilities are modest but relaxed, catering to locals and pilgrimage travelers.
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Frequently asked questions

How hot is the water?
The water runs quite hot here, around 40 °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).