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Kanto · Onsen area

Ashio Onsen

あしおおんせん · 足尾温泉

Tochigi · 日光市

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Official classification

Spring type (therapeutic classes)

Official spring-type name (as recorded)アルカリ性単純温泉

Source temperature
36°C
pH
10
Flow rate
Unconfirmed
Radon
Unconfirmed

Appearance & feel

Water colour · Feel

Unconfirmed

Colour and feel are listed only where a source states them. They vary by day and by bath.

This area has basic information only. In-depth articles are being added.

Facilities in this area

Facilities come from the register (Wikipedia, OpenStreetMap, official sites). Those marked "natural spring unconfirmed" are listed on the basis of their name only.

No facility information yet.

Getting there

Reachable by public transport

鉄道:わたらせ渓谷鐵道通洞駅から車で15分

Checked
no check date

Visitor reviews

No reviews yet. While the review platform is being prepared, we do not display fictional reviews or ratings.

Review posting is in preparation, with visit date, facility, comments on water, scenery and access, photos, language and reporting.

Register sources

Data status

Name & locationPublishedCoordinatesIn preparationSpring typePublishedPhotosIn preparationFacilitiesIn preparationVisiting info (dated)In preparationEditorial articleIn preparation

Updated 2026-10-09

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