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Tobira Onsen

Nagano · 扉温泉

Tobira Onsen is a hot spring town in Nagano, Japan. The water leaves the ground at 40°C, comfortably warm. It measures pH 8.81 — mildly alkaline, the slippery kind. Officially the water is classed as simple spring. Its sources put out around 300 litres a minute.

Getting there

From Tokyoabout 3 h

CarNot needed

JR PassCovers the train

1. Train to Matsumoto Station (JR)
2. Many inns send a car to the station — ask when you book

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.

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

40°C

pH

8.81 (mildly alkaline)

Discharge

300 litres a minute

Address in Japanese

長野県松本市大字入山辺

Figures from the town's Japanese Wikipedia article.

Read more

Japanese Wikipedia