Nyu Yamasemi Onsen-kan

丹生ヤマセミ温泉館たんじょうヤマセミおんせんかん

OtherTemporarily Closed
Kansai·Wakayama

Day Use

Yes

Bathing & Water

OnsenYes

Uses natural hot spring water

丹生ノ川温泉

Nyunokawa Onsen

Operated by · 田辺市長 真砂充敏

Sampled at wellhead
Simple
Classification

Sodium Bicarbonate-Carbonate spring

An alkaline simple thermal spring drawn from the Nyunokawa valley. At pH 9.3 it sits in Japan's beauty-water family — strongly enough alkaline to give skin the characteristic slippery feel. Mineralization is light at only 297 mg/kg, so the water reads as soft and gentle rather than chemically loud, with the alkaline pH carrying the sensory signature on its own.

pH
9.30
Alkaline
Source temperature
26.5°C
Low temp.
Tonicity
0.30g/kg
Hypotonic
Color
colorless and clear
Taste
tasteless
Odor
odorless
Highlights
  • Top-decile alkaline

Analyzed Sep 26, 2019·和歌山県環境衛生研究センター·Cert no. 温泉第1095号

Programs

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SM
Sergey M
4 months ago

676. Nyu Yamasemi Onsen-kan, Tanabe, Wakayama ★ Onsen for 800. Operating hours are 11:00-20:00 (except Tue). They stamp the Wakayama 88 Onsen book. They sell the Wakayama 12 Onsen stamp book. Outdoor semicircular stone bath. Bushes block the view, but in the rain it was still great watching the trees. Clear water, temperature around 41. Indoor bath with clear water, temperature around 42. Breathing inside is comfortable. Solid place. Worth considering if you're passing by. 09.11.2025