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Sakazuki Onsen

Otaru, Hokkaido, Japan
Sakazuki Onsen
Location
Otaru, Hokkaido, 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

Sakazuki Onsen carries a name meaning sake cup, the shallow ceramic vessel central to Japanese sake drinking culture and ritual exchange, suggesting a spring whose setting or the shape of its bathing pool recalls the elegant, round form of a sakazuki — an image that connects the act of thermal bathing with the contemplative, ceremonial pleasure of sake drinking as parallel expressions of the Japanese tradition of finding meditative depth in simple, natural experiences. Located in Japan's volcanic landscape, this simple-type thermal spring offers naturally heated mineral waters in a setting where the cultural resonance of its name enriches the experience of immersion in the earth's geothermal warmth with the additional poetry of the Japanese sake tradition. Sakazuki Onsen invites visitors to experience thermal bathing as a ceremonial act of natural pleasure, where the circular warmth of the bathing pool and the warmth of volcanic spring water together evoke the Japanese aesthetic of finding the profound within the simple and circular.

Insider tip — Sakazuki Onsen sits in the hills above Otaru on western Hokkaido, offering classic sodium-chloride waters renowned for warming the body deep into the bones. The brine-rich spring is especially popular with locals after a cold day at the port markets. Small wooden bathing rooms give a homely, unpretentious atmosphere uncommon at larger resort onsen. Arrive early evening to catch the last light over the Sea of Japan through the steam-fogged windows.
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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 (idéal automne-hiver).