Onsen OniOnsen Oni

Hakata Onsen Moto Yu

博多温泉 元湯はかたおんせん もとゆ

Other
Hakata Onsen
Kyushu & Okinawa·Fukuoka
092-591-6713

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

元湯

Motoyu

Operated by · 安部隆典

Sampled at wellhead
塩
Chloride
Classification

Sodium-Calcium Chloride spring

A hot (48.4 °C) sodium-calcium chloride spring, weakly alkaline and soft on the lips with a faint salty edge. Colorless and clear at the wellhead, the lab sample picks up a faint hydrogen sulfide note about seven hours after collection. Moderately mineralized at 3,750 mg/kg dissolved solids — noticeable body and the heat-retaining feel typical of chloride waters.

pH
7.51
Weakly alkaline
Source temperature
48.4°C
Hot
Tonicity
3.75g/kg
Hypotonic
Flow rate
120L/min
Typical
Free CO₂
1.20mg/kg
Low
Color
colorless and transparent
Taste
slightly salty
Odor
odorless

Analyzed Dec 11, 2019·株式会社CRC食品環境衛生研究所

Programs

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SM
Sergey M
1 year ago

456. Hakata Onsen Motoyu, Fukuoka Old-school onsen for 500. Operating hours listed as 13:00 to 18:00 (except Thu and Sun). They stamp the 88 Onsen of Kyushu book. Bath photo from the internet, accurate. Small bath inside with clear water, slight sulfur smell. Temperature 46-47. The washing area is also very small. During the visit, the pipes were bubbling, hissing, shooting water jets — a real underground steampunk vibe. The hissing and bubbling went on for quite a while, only stopping after I'd already left the building. Very unique cool place, highly recommended for fans of old-school and underground onsen. 31.03.2025