ThermaeExplore the map →

Nakatsu Onsen Oita

Nakatsu, Oita Prefecture, Kyushu, Japan
Nakatsu Onsen Oita
Location
Nakatsu, Oita Prefecture, Kyushu, Japan
Water type
bicarbonate
Temperature
41 °C
pH
8

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
Standard buoyancy
LowHigh

Soft water — natural, classic buoyancy.

BicarbonatesSodiumCalcium

Nakatsu Onsen Oita is a thermal facility in Nakatsu City on the Suonada coast of northern Oita Prefecture, a historic castle town of considerable cultural significance as the birthplace of Fukuzawa Yukichi, the Meiji-era intellectual, educator, and social reformer whose face appears on Japan's ten-thousand-yen banknote and whose liberal philosophy of independence, individualism, and the pursuit of Western learning through his celebrated Gakumon no Susume (Encouragement of Learning) helped shape modern Japanese civil society after the Meiji Restoration opened Japan to the world in 1868. Nakatsu Castle, one of three castles built by the daimyo Kuroda Yoshitaka in Kyushu, guards the historic coastal town whose legacy includes not only Fukuzawa's educational philosophy but also the distinctive yakitori cooking tradition that has made Nakatsu's grilled chicken restaurants among the most celebrated in all of Japan, rivaling the yakitori cultures of Tokyo and Osaka in the quality and refinement of its charcoal-grilled poultry preparations. The sodium-bicarbonate spring waters here offer therapeutic bathing in a city of exceptional historical and culinary character, where intellectual enlightenment, castle heritage, and yakitori culture combine in one of northern Kyushu's most rewarding and individually flavored historic castle town destinations.

Insider tip — Nakatsu Onsen lies in the castle town of Nakatsu on the northern coast of Oita Prefecture, a city renowned for its karaage fried chicken culture and Nakatsu Castle overlooking the Suo Sea. The sodium-bicarbonate waters at 41°C feed public and hotel baths that serve both locals and visitors exploring the castle and Fukuzawa Yukichi memorial. The mineral-rich water is soft on the skin and characteristic of the geothermal belt running through northern Oita.
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 bicarbonate water.
What is the best season to visit?
The most favourable period for this spot is: Toute l'année (idéal automne-hiver).