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Ōshio Onsen

Nagano · 大塩温泉

Ōshio Onsen is a hot spring town in Nagano, Japan. The water leaves the ground at 39°C, comfortably warm. Officially the water is classed as sulfate spring.

Getting there

From Tokyoabout 2½ h

CarNot needed

JR PassCovers the train

1. Train to Ueda Station (Shinkansen)
2. Local bus, about 60 min

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

Sulfate spring 硫酸塩泉

Clear water with a faintly bitter taste. Known for holding heat.

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

39°C

Address in Japanese

長野県上田市

Figures from the town's Japanese Wikipedia article.

Read more

Japanese Wikipedia