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Ōiwayunomiko Onsen

Toyama · 大岩湯神子温泉

Ōiwayunomiko Onsen is a hot spring town in Toyama, Japan. The water leaves the ground at 21.5°C, cool enough that the baths here are usually reheated. It measures pH 7.35 — close to neutral. Officially the water is classed as simple spring. Its sources put out around 7 litres a minute. 1 inns take visitors here.

Getting there

From Tokyoabout 3 h

From Kyoto / Osakaabout 2½ h

JR PassNot a JR line

1. Train to Kamiichi Station

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.

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

21.5°C

pH

7.35 (close to neutral)

Discharge

7 litres a minute

Inns

1

Address in Japanese

富山県中新川郡上市町湯神子25 | |

Figures from the town's Japanese Wikipedia article.

Read more

Japanese Wikipedia

Other towns in Toyama