ThermaeExplore the map →

Kimitsu Onsen

Kimitsu, Chiba Prefecture, Japan
Kimitsu Onsen
Location
Kimitsu, Chiba Prefecture, 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

Kimitsu Onsen is located in Kimitsu City, Chiba Prefecture, in the Futtsu-Kimitsu highland interior of the Boso Peninsula where the Otaki waterfall — one of Japan's one hundred famous waterfalls, plunging 80 meters through a forested gorge — creates a major natural attraction in this scenic corner of Chiba's green interior. The siliceous thermal waters here serve a city whose diverse character encompasses Tokyo Bay coastal industrial development, the dramatic inland highland forests of the Boso's central ridge, and the natural beauty of the Otaki waterfall gorge that attracts both hikers and sightseers from the Kanto region. Bathing at Kimitsu Onsen after visiting the spectacular Otaki waterfall provides a complete southern Boso natural heritage experience, combining the dramatic beauty of one of Japan's finest waterfalls with the restorative comfort of therapeutic siliceous mineral spring bathing in Chiba's scenic interior highlands.

Insider tip — Kimitsu Onsen draws saline water from the forested hills of the Boso interior, where ancient marine sediments trap chloride-rich groundwater. The surrounding Kimitsu highlands are known for the Yoro Valley gorge with its moss-covered canyon, and the onsen makes a natural endpoint for a hiking day in this surprisingly wild corner of Chiba. Waters are notably buoyant due to salt content.
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).