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Aichi Oharu Onsen

Oharu, Aichi, Japan
Aichi Oharu Onsen
Location
Oharu, Aichi, Japan
Water type
bicarbonate
Temperature
40 °C
pH
8

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
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Oharu, in the western Aichi Prefecture in the Nobi plain lowlands south of Ichinomiya, is a small agricultural community in the Nobi plain whose traditional Owari textile farming, chrysanthemum cultivation, and the extraordinary flat landscape of the western Aichi lowlands create a quietly productive agricultural spa setting accessible from the greater Nagoya metropolitan area. Aichi Oharu Onsen draws on chloride-rich thermal waters from the geological resources of the western Aichi Nobi plain, offering warm restorative baths in a flat agricultural community whose traditional Owari textile and chrysanthemum heritage, the Nobi plain cycling routes, and easy access to the Nagoya metropolitan area via the Meitetsu Bisai Line create an accessible and unpretentious rural spa setting. The Oharu chrysanthemum cultivation heritage, the flat Nobi plain cycling routes through rice paddy and agricultural field landscapes, and the proximity to Ichinomiya's Masumida Shrine — one of the most significant Owari province shrines — and the Bisai traditional textile district create a pleasantly agricultural and heritage-aware backdrop for thermal relaxation in western Aichi Prefecture.

Insider tip — Oharu is a quiet town on the Nobi Plain southwest of Nagoya, and its onsen facility channels bicarbonate water prized for its skin-smoothing and circulatory benefits. The surrounding flat farmland gives the area a calm, rural atmosphere distinct from the urban sprawl nearby. A midweek afternoon visit guarantees near-total solitude in the baths.
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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 bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).