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Mishimadani Onsen

Nagaoka, Niigata, Japan
Mishimadani Onsen
Location
Nagaoka, Niigata, Japan
Water type
sodium chloride
Temperature
41 °C
pH
7.3

Water profile

Thermicity
Sedative
41 °C
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

Mishimadani Onsen is a hot spring facility in Nagaoka city, Niigata Prefecture, Japan, in the Chuetsu region of central Niigata where the Shinano River — Japan's longest river — flows through the Echigo plain between the mountains of the Uonuma district and the Sea of Japan coast, in a prefecture celebrated for exceptional rice cultivation, nihonshu (sake) brewing from the region's pure cold water and rice varieties, and the enormous snowfall that defines both the difficulty and the particular aesthetic beauty of Niigata's winter culture. Nagaoka itself is one of Niigata's major cities, associated with the spectacular Nagaoka Fireworks Festival — regarded by many as Japan's finest fireworks display — and with the tradition of resilience exemplified by the annual fireworks ceremony of peace that commemorates the city's near-total destruction in the 1945 Allied bombing raids. Mishimadani Onsen provides mineral spring bathing in the Niigata tradition, drawing on the geothermal resources of the Echigo Mountain region to offer the warm thermal bathing that is particularly cherished in Niigata's heavy snowfall winters.

Insider tip — Mishimadani Onsen is in the hills above the Nagaoka basin, an area known for its sake breweries and autumn foliage. The valley name suggests a spring hidden among cedar forest — a contemplative soak far from city schedules.
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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.