Gagaku no Yu
Saitama, Kanto, Japan
- Location
- Saitama, Kanto, 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
Gagaku no Yu welcomes bathers in Saitama, within the Kanto region. The facility offers sodium-chloride water at 41°C, split between an indoor bath and an open-air rotenburo, with a sauna available.
Insider tip — Gagaku no Yu is an urban day-spa onsen facility in Saitama Prefecture, tapping into the deep sodium-chloride aquifer that underlies much of the Kanto plain. The dark, tannin-colored water is a hallmark of Kanto metropolitan onsen and is prized for its moisturizing effect on the skin. Easy to reach by train from central Tokyo, it offers a genuine hot spring experience without leaving the city. Ideal for evening relaxation after a day of sightseeing.
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).