Onsen OniOnsen Oni

Hitoyoshionsen Oganoyado

人吉温泉 おおがの宿

Stay FacilityOperational
Kumamoto
+81 966-22-3601yado.ohga-hitoyoshi.com

Bathing & Water

Onsen

Uses natural hot spring water

人吉温泉 おおがの宿

Hitoyoshi Onsen Oganoyado
曹
Bicarbonate
+ Chloride · Sulfate
Classification

Sodium Bicarbonate-Chloride-Sulfate spring

A sodium-led bicarbonate spring — the classic jūsō-sen style — layered with a salty chloride edge and the quiet body of sulfate, emerging hot at 51.0 °C. Weakly alkaline and soft on the skin, it sits in the Japanese beauty-water family. With 88 mg/kg of metasilicic acid, it leaves a thin silica film that makes skin feel smoother afterwards.

Source temperature
51.0°C
Hot
Tonicity
1.90g/kg
Hypotonic
Free CO₂
59mg/kg
Low
Free H₂S
0.10mg/kg
Low
Highlights
  • High silica

Analyzed Oct 5, 2015·株式会社 東洋環境分析センター

Programs

SM
Sergey M
1 year ago

368. Sagaraji no Yu Oga, Hitoyoshi, Kumamoto Onsen for 350 yen. Operating hours listed as 12:00 to 10:30. They stamp the 88 Onsen of Kyushu book. There was no staff — payment via terminal. Photos of the baths from the internet match. Indoor bath zone. Breathing inside is tolerable. 1. Bath with clear brown water, temperature around 40-41. 2. Bath with clear brown water, temperature around 43-44. 3. Cold bath.