Nyuto Kuroyu Shiwa
Shiwa, Iwate, Tohoku, Japan
Illustration photo — not a verified picture of this exact spot.
- Location
- Shiwa, Iwate, Tohoku, Japan
- Water type
- sulfurous
- Temperature
- 45 °C
- pH
- 6.5
Water profile
Thermicity
Sedative
LowHigh
Relaxing — deep, immediate muscle release.
Mineralisation
Bio-active
LowHigh
Rich in active gases or metals — a strong mineral character.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
SoufreSulfuresSulfates
Located in the Akita Kosmazan mountain range, at approximately 1,000 meters above sea level, Nyuto Kuroyu Shiwa is a thermal spring and spa nestled within Japan's natural beauty. The site features bicarbonate water, part of a long thermal tradition. Visitors can unwind and rejuvenate amidst stunning scenery. A tranquil retreat awaits those seeking relaxation.
Insider tip — Part of the legendary Nyuto onsen cluster deep in the beech forests of Akita and Iwate prefectures, Kuroyu is renowned for its milky white sulfurous waters and rustic log-cabin bathhouses. The rotenburo (outdoor bath) overlooks a mountain stream, and mixed bathing in the traditional style is still practiced. Snow covers the forest from November to April, intensifying the primeval atmosphere.
Nearby
Frequently asked questions
How hot is the water?
The water runs quite hot here, around 45 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features sulfurous water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).