Chokai Onsen Hoyo Center; Apon Nishihama
Yuza, Akita, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Yuza, Akita, Japan
- Water type
- sodium chloride
- Temperature
- 42 °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
Chokai Onsen Hoyo Center, also known as Apon Nishihama, sits in Yuza, Akita prefecture, at the foot of Mount Chōkai. Its sodium-chloride water reaches 42°C and feeds an indoor bath, a rotenburo and a sauna.
Insider tip — Apon Nishihama sits beneath Mount Chokai, the beautifully symmetrical volcano rising to 2236 metres that straddles the Akita-Yamagata border and is called the Dewa Fuji. The healing centre spring draws saline water from the Shonai coast sediments while the sacred mountain looms above, its crater lake cloaked in seasonal snow.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 42 °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.