Oboke Onsen Tokushima
Oboke, Tokushima, Japan
- Location
- Oboke, Tokushima, 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
Oboke Onsen is situated in Miyoshi city, Tokushima Prefecture, within the spectacular Oboke Gorge carved by the emerald-green Yoshino River as it winds through Shikoku's dramatic limestone terrain. The chloride-based thermal waters offer body-warming and fatigue-relieving benefits, making them a prized reward after white-water rafting or scenic boat tours through the gorge's towering marble cliffs. The onsen is part of the broader Oboke-Koboke area, celebrated as one of the most scenic river landscapes in all of Japan.
Insider tip — Oboke Onsen perches above the Yoshino River gorge on Shikoku island, where emerald-green rapids carved through marble and crystalline schist create one of Japan's most dramatic river landscapes. The sodium-chloride water is deeply warming after white-water rafting excursions that launch from the gorge below, and many guides consider the post-raft soak as essential as the activity itself. The Iya Valley fog that fills the canyon at dawn is a sight best appreciated from an outdoor tub before breakfast.
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).