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Itako Onsen

Itako, Ibaraki, Japan
Itako Onsen
Location
Itako, Ibaraki, 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

Itako Onsen flows in one of Japan's most picturesque canal cities, where the network of waterways threading through the town's historic district has earned Itako the romantic designation of a 'water town' — a landscape of willow-lined canals, traditional wooden bridges, and iris gardens that bursts into vivid purple and white bloom each June during the Ayame Festival, one of the Kanto region's most celebrated floral spectacles. The city sits within the Suigo Tsukuba Quasi-National Park, a protected wetland landscape stretching between the Tone and Kinu rivers where traditional canal boat tours reveal a watery world of lotus ponds, dragonflies, and traditional settlements largely hidden from the main roads. The onsen's siliceous mineral waters complement the canal city's water-centered identity, offering thermal bathing as another dimension of the intimate relationship between Itako's community and the richly varied waters that surround it.

Insider tip — Itako Onsen is embedded in one of Japan's most atmospheric river-canal towns, where traditional wooden boats once ferried lotus root and iris along the waterways connecting the Tone River to Lake Kitaura. The sodium-chloride spring water here is drawn from considerable depth and is categorised as a Type II highly concentrated brine, exceptionally warming and said to ease arthritis. The annual iris festival in June draws crowds to view millions of blooms in the surrounding marshes, with onsen facilities offering a tranquil retreat afterward.
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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).