Ryokan Wakaba

旅館わかばりょかんわかば

Lodging

Kyushu & Okinawa·Kumamoto

0967-44-0500 ryokanwakaba.com

Day Use

Yes

08:30–10:00, 11:30–21:00

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Policies & Services

TattooYes

Allows entry with visible tattoos

黒川温泉旅館わかば

Kurokawa Onsen Ryokan Wakaba

Operated by · 旅館わかば

湯

Simple

Color: colorless and clear
Taste: tasteless
Odor: faint hydrogen sulfide

Sodium Sulfate-Chloride spring

pH 3.7Weakly acidicHot source · 70°CHigh silica

Composition fingerprint0.7 g/kg dissolved · Hypotonic

Na⁺69

Ca²⁺13

SO₄²⁻64

Cl⁻35

◀ CationsAnions ▶

Sodium Na⁺: salt's cation — pairs with chloride to make the water salty.
Sulfate SO₄²⁻: "gypsum / Glauber's salt" — vessels and wound healing.

Known good for

Aches & jointsstiff shoulders
Smooth skindry, rough skin
Recoveryfatigue, stress

A private source serving Kurokawa Onsen Ryokan Wakaba. Hot at 70.1 °C (one of Japan's hotter wellheads) and weakly acidic at pH 3.7, yet the dissolved-solids load is light enough at 0.67 g/kg that the cert classes it as a simple thermal spring. Sulfate dominates the anion side at roughly 64 mval percent and a faint hydrogen sulfide note rides on the surface. A generous 181.9 mg/kg of metasilicic acid leaves the kind of silica film that makes skin feel noticeably smoother afterwards.

Sampled at wellhead·Analyzed Jun 14, 2017·株式会社同仁グローカル·Cert no. K16110755

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1 year ago· edited

9. Ryokan Wakaba, Kurokawa Onsen ★★ Visited for higaeri (day-use), located not far from the village center. Usually, higaeri is available from 8:30 to 10:00 and from 11:30 to 21:00, rarely closed during the week. It is part of the Kurokawa tag. There are two private baths for 2200 yen each, also available for higaeri (did not use them). The ryokan has its own branded towels. The staff are very pleasant and approachable. The outdoor bath is partially made of stone with views of trees, the ryokan buildings, and from certain angles, the river. The bath is shallow. There is a remote area under a roof where the water is shallow. The water is clear, temperature around 40°C. The indoor bath has clear water, temperature about 40°C. The air inside is comfortable. Another good example of an onsen in Kurokawa. 16.01.2025

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Last updated June 19, 2026