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Akkeshi Onsen Hokkaido

Akkeshi, Akkeshi-gun, Hokkaido, Japan
Akkeshi Onsen Hokkaido
Location
Akkeshi, Akkeshi-gun, 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

Akkeshi Onsen Hokkaido is a thermal facility in Akkeshi Town on the Sea of Okhotsk coast of eastern Hokkaido, a fishing port community universally celebrated among Japanese food enthusiasts as the home of Japan's finest Pacific oysters, cultivated in the cold, nutrient-rich waters of Akkeshi Lake (Akkeshi-ko) where the combination of the Sea of Okhotsk's cold clear currents, the lake's brackish conditions at the tidal interface, and the abundant phytoplankton nourished by incoming sea water create ideal conditions for producing oysters of exceptional size, sweetness, and oceanic minerality recognized by Japanese chefs and gourmets as the country's premium oyster production site. Akkeshi Lake is itself a Ramsar Convention designated wetland, providing habitat for red-crowned cranes, whooper swans, and the Pacific salmon that run up the Akkeshi River system in autumn in populations large enough to attract brown bears from the surrounding forests in one of eastern Hokkaido's most accessible wildlife-watching opportunities. The chloride thermal spring waters here warm oyster farmers, fishermen, and visitors who come specifically to eat freshly harvested Akkeshi oysters at the town's seafood restaurants and fish markets before soaking in the therapeutic mineral pools of this proud eastern Hokkaido fishing community where marine gastronomy and hot spring culture combine in characteristically Hokkaido fashion.

Insider tip — Akkeshi is internationally recognized for its oyster production from the cold, clean waters of Akkeshi Bay, and the local onsen naturally draws on the same saline aquifer beneath this coastal town. The sodium-chloride water at 41°C is pleasantly warming in a town where sea fog rolls in even in August. Bathing before a seafood dinner of raw Akkeshi oysters creates an ideal sensory sequence. The coastal walk along the lagoon shore is peaceful in any season.
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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).