Umagoshi Onsen
Nagaoka, Niigata, Japan
- Location
- Nagaoka, Niigata, Japan
- Water type
- thermal
- Temperature
- 38 °C
- pH
- 7.3
Water profile
Thermicity
Neutral
LowHigh
Soothing — neither hot nor cold, perfect balance.
Mineralisation
Balancing
LowHigh
Rich in trace elements — gentle on the skin.
Buoyancy
Standard buoyancy
LowHigh
Soft water — natural, classic buoyancy.
BicarbonatesCalcium
Umagoshi Onsen is a simple alkaline hot spring in Japan, its name evoking the image of horses crossing mountain terrain—a reminder of the country's long history of travelers pausing at thermal springs along ancient mountain routes. The gentle, weakly alkaline waters are skin-softening and approachable for all bather types, prized for their relaxing effect on tired muscles and joints. Visitors come for the unhurried atmosphere and restorative mineral soak that defines the quiet onsen tradition of rural Japan.
Insider tip — Umagoshi Onsen in the Niigata highlands near Nagaoka lies in the snow country of the Echigo plain — a region famous for its rice, sake, and the spectacular Nagaoka fireworks festival, one of Japan's three greatest. The mild springs serve a landscape of rice fields and forested hills in the heart of Japan's premier rice and sake region, where the heavy winter snowfall, the great Shinano river, and the deep brewing traditions define the character of central Niigata.
Nearby
Frequently asked questions
How hot is the water?
The water is neutral here, around 38 °C — a perfect balance, neither too hot nor too cold.
What type of water is found here?
This spot features thermal water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année.