ThermaeExplore the map →

Ami Onsen

Ami, Ibaraki, Japan
Ami Onsen
Location
Ami, Ibaraki, 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

Ami Onsen serves a town in Ibaraki Prefecture positioned between the science city of Tsukuba and the vast reed marshes of Lake Kasumigaura, where the flat agricultural landscape of central Ibaraki gives way to the lake's shimmering expanse — one of Japan's most important freshwater ecosystems and a designated Ramsar wetland that shelters wintering whooper swans, great white pelicans, and dozens of other migratory species each winter. The Ami Premium Outlets draw shoppers from across the greater Tokyo region, yet the town retains the quiet agricultural character of a community whose economy is still rooted in the rice paddies and market gardens that extend in every direction across the Kanto Plain's fertile lowlands. The onsen's siliceous thermal waters, drawn from the mineral-rich geology underlying this productive agricultural plain, provide a genuinely local wellness resource in a community shaped by the combined influences of the lake, the land, and the nearby science city.

Insider tip — Ami Onsen lies near Lake Kasumigaura, Japan's second-largest lake, in the agricultural heartland of Ibaraki Prefecture. The sodium-chloride spring water is characteristic of the buried Kanto aquifer, dark and mineral-rich, with a warming effect that lingers for hours after bathing. The town of Ami is also home to Miho no Matsubara-style pine groves along the lake shoreline and a bustling produce market where locally grown lotus root and sweet potato are sold.
Find hotels nearby →Tickets & activities →See the map & practical info →

Nearby

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).