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Sano Natural Onsen

Kanagawa · 佐野天然温泉

Sano Natural Onsen is a hot spring town in Kanagawa, Japan. The water leaves the ground at 29.9°C, cool enough that the baths here are usually reheated. It measures pH 8.3 — mildly alkaline, the slippery kind. Officially the water is classed as chloride spring and bicarbonate spring.

Getting there

From Tokyoabout 1½ h

CarNot needed

JR PassCovers the train

1. Train to Kinugasa Station (JR)
2. Local bus, about 10 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

Chloride spring 塩化物泉

Salty water. The salt leaves a thin film on the skin, so you stay warm well after leaving the bath.

Bicarbonate spring 炭酸水素塩泉

Smooth, slightly slippery water. Often nicknamed bihada-no-yu, the water for beautiful skin.

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

29.9°C

pH

8.3 (mildly alkaline)

Address in Japanese

神奈川県横須賀市佐野町4-5

Figures from the town's Japanese Wikipedia article.

Where it is

35.2644, 139.6678 — open the map

Read more

Japanese Wikipedia