Onsen Kongo no Yu
Katsuragi, Wakayama, Japan
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- Location
- Katsuragi, Wakayama, Japan
- Water type
- sodium chloride
- Temperature
- 41 °C
- pH
- 7.3
Water profile
Thermicity
Sedative
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
Onsen Kongo no Yu welcomes bathers in Katsuragi, Wakayama around sodium-chloride water, typical of the area's onsen. The water emerges at around 41°C. Facilities include an indoor bath, an open-air bath (rotenburo) and a sauna. A simple spot, valued for its neighbourhood feel.
Insider tip — Onsen Kongo no Yu is located in the Katsuragi area near the border of Wakayama and Nara prefectures, at the foot of Mount Kongo in the Kinki region. The saline waters drawn here are characteristic of the stratified marine sediments underlying the Yamato Plain and Kinki lowlands. Mount Kongo itself is a popular hiking destination, and the onsen provides a welcome recovery soak after descending from the summit trails. The facility's name evokes the rocky, enduring quality of Kongo-san and the long local tradition of mineral bathing in southern Kinki.
Nearby
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).