ThermaeExplore the map →

Omitama Onsen Ibaraki

Omitama, Ibaraki Prefecture, Japan
Omitama Onsen Ibaraki
Location
Omitama, Ibaraki Prefecture, Japan
Water type
bicarbonate
Temperature
40 °C
pH
8

Water profile

Thermicity
Sedative
40 °C
LowHigh

Relaxing — deep, immediate muscle release.

Mineralisation
Restorative
LowHigh

Loaded with major ions — the essential minerals (Ca, Mg).

Buoyancy
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Omitama, in central Ibaraki Prefecture on the Kanto Plain, is an agricultural city set amid the broad open farmlands of the Ibaraki interior where lotus root, sweet potato, and rice cultivation define the rural character of this Kanto agricultural heartland between the Tone and Naka rivers. Omitama Onsen Ibaraki draws on sodium and bicarbonate thermal waters from the deep sedimentary geological formations of the north Kanto aquifer, providing warm therapeutic baths for local residents in a pleasantly unhurried agricultural community removed from the suburban pressures of the greater Tokyo zone. The flat cycling countryside of Omitama's surrounding farm districts, the nearby Kasumigaura lake shore — the second-largest lake in Japan — and the distinctive Ibaraki agricultural market culture of seasonal vegetable and flower festivals create a quietly rewarding natural backdrop for thermal bathing in this central Ibaraki farming community.

Insider tip — Omitama occupies the flat Kanto lowlands of central Ibaraki, where bicarbonate-rich thermal water at 40°C is pumped from sedimentary strata beneath the patchwork of rice paddies and melon fields. The town was formed from a merger of three former municipalities and retains a dispersed rural character, making its sento a genuine local meeting point. Ibaraki's melon-growing fame extends to Omitama, and seasonal produce stalls near the bathhouse entrance are a charming local detail. The water's high bicarbonate content gives a particularly smooth skin feel distinct from the saltier coastal wells.
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 40 °C — a sedative water that brings immediate muscle release.
What type of water is found here?
This spot features bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).