Onsen OniOnsen Oni

Search Onsen Oni

Search onsen, areas, prefectures and pages.

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

Public Bathhouse
Kansai·Wakayama

Day Use

Yes
Mon11:00–20:00
TueClosed
Wed11:00–20:00
Thu11:00–20:00
Fri11:00–20:00
Sat11:00–20:00
Sun11:00–20:00

except Tuesday

¥800

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

丹生ノ川温泉

Nyunokawa Onsen

Operated by · 田辺市長 真砂充敏

Simple
Color
colorless and clear
Taste
tasteless
Odor
odorless

Sodium Bicarbonate-Carbonate spring

pH 9.3AlkalineTop-decile alkaline
Composition fingerprint0.3 g/kg dissolved · Hypotonic
Na⁺95
HCO₃⁻64
CO₃²⁻26
CationsAnions
Sodium Na⁺
salt's cation — pairs with chloride to make the water salty.
Bicarbonate HCO₃⁻
"soda" — softens skin, leaves it smooth.
Known good for
  • Smooth skindry, rough skin
  • Recoveryfatigue, stress

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.

Sampled at wellhead·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

Explore the water

Views

Forest

Programs

About

A public bath deep in the Ryujin valley, inside a forest park laid out on the grounds of a closed school and named for the yamasemi (ヤマセミ), the crested kingfisher that fishes this river. The building is plain and Japanese in style, built with local Ryujin timber. There is an indoor tub and an open-air bath that looks straight out at the clear Nyu-no-kawa (丹生ノ川) and the Kumano ridges behind it. The water is an alkaline simple spring, soft and a little slippery, with a local reputation for what it does for your skin. The campsite next door is where people set off to walk the Hatenashi (果無) range.

Loading map…

3.0

1 review

5
0
4
0
3
1
2
0
1
0
SM
Sergey M
9 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

1
2
3
4
5
6

Last updated July 29, 2026