Photo of Ōki Onsen
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Chugoku · Cold mineral spring

Ōki Onsen

おうきおんせん · 王喜温泉・糸根温泉

Yamaguchi · 山陽小野田市

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Official classification

Spring type (therapeutic classes)

Official spring-type name (as recorded)放射能泉(含弱放射能―ナトリウム・カルシウム―塩化物冷鉱泉)

Source temperature
19.4–21.7°C
pH
6.9–7.4
Flow rate
Unconfirmed
Radon
Present

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.

Day-use bath · Status unconfirmed

天然温泉;みちしお

Natural spring unconfirmed
Day-use bathing
Yes
Fee
Unconfirmedno check date
Hours
Unconfirmedno check date

Getting there

Hard to reach by public transport

山陽自動車道埴生ICから国道2号(旧道)方面へ

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 & locationPublishedCoordinatesPublishedSpring typePublishedPhotosPublishedFacilitiesPublishedVisiting info (dated)In preparationEditorial articleIn preparation

Updated 2026-10-09

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