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Photo: Fuseoyama · CC BY-SA 3.0 · Wikimedia Commons

Unazuki Onsen

Toyama · 宇奈月温泉

Unazuki Onsen is a hot spring town in Toyama, Japan. The water leaves the ground at 98.3°C, hot enough that it has to be cooled before anyone can get in. It measures pH 8.19 — mildly alkaline, the slippery kind. Officially the water is classed as simple spring. Its sources put out around 1 litres a minute. 15 inns take visitors here.

Getting there

From Tokyoabout 3 h

From Kyoto / Osakaabout 3 h

CarNot needed

JR PassNot a JR line

1. Train to Unazukionsen Station
2. A short walk

Fly into Haneda or Narita. Times are rough estimates worked out from station locations, not a timetable — check the exact route on Google Maps.

The water here

Simple spring 単純温泉

Mild and low in dissolved minerals. Usually clear and gentle on the skin, which is why these baths are often recommended for first-timers.

More photographs

From Wikimedia Commons. Tap a photo for the photographer and licence.

Things to see nearby

Places from Wikidata, photographs from Wikimedia Commons. Distances are in a straight line from the town.

With tattoos

Many public baths still turn away visible tattoos, and the rule is set by each bath, not by the town. The reliable way round it is to bathe privately: a room with its own open-air bath, or an inn with a private bath you can book for yourselves.

More on tattoos and onsen

Where to stay

Opens Rakuten Travel, which lists inns in English. Onsen Guide earns a commission if you book through these links, at no extra cost to you.

Hot spring towns nearby

Similar water elsewhere

Towns further away with the same kind of water — useful if this one is hard to reach or fully booked.

The numbers

Water temperature

98.3°C

pH

8.19 (mildly alkaline)

Discharge

1 litres a minute

Inns

15

Address in Japanese

富山県黒部市宇奈月温泉

Figures from the town's Japanese Wikipedia article.

Where it is

36.8171, 137.5815 — open the map

Read more

English Wikipedia · Japanese Wikipedia