Uji Natural Hot Spring Genji-no-Yu

宇治天然温泉源氏の湯うじてんねんおんせんみなもとしのゆ

Day-use natural hot spring baths and a manga lounge in Uji

Bathing Complex

Kansai·Kyoto

0774-41-2615 genji-yu.jp

Day Use

Yes

10:00–00:00

Open daily except for occasional facility maintenance closures.

¥1,100

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Sauna room of any kind

Cold BathYes

Cold water plunge bath, typically used after sauna

Bathing Arrangements

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

DiningYes

A restaurant or dining room open to visitors, not only meals for overnight guests

ParkingYes

On-site or nearby parking available

Water treatment

Treated and recirculated(partial disclosure)

from Article 18 disclosure

Added water
Yes
Reheated
Not disclosed
Recirculated
Yes
Disinfected
Yes
Sodium hypochlorite
Bath additives
Not disclosed

宇治天然温泉源氏の湯

Uji Natural Hot Spring Genji-no-Yu

塩

Chloride

Sodium-Calcium Chloride spring

Composition fingerprint8.8 g/kg dissolved · Isotonic

Na⁺75

Ca²⁺20

Cl⁻99

◀ CationsAnions ▶

Sodium Na⁺: salt's cation — pairs with chloride to make the water salty.
Chloride Cl⁻: table-salt anion — coats the skin and holds heat in.

Known good for

Warmingcold sensitivity
Smooth skindry, rough skin
Cutsminor wounds

A sodium-calcium chloride spring at isotonic strength — salty, heat-retaining, and richly mineralized at roughly 8.8 g/kg of dissolved solids that leaves a mineral film on the skin. The wellhead is a cool 27.5 °C, so the water is heated and served at around 42 °C with recirculation and chlorine disinfection.

Analyzed Dec 6, 2022·日本水処理工業株式会社·Cert no. 大阪府第5号

Explore the water

Highlights

Steam Sauna

Lukewarm Bath

About

Uji's only natural hot spring feeds this day-use bathhouse, drawn from more than 1,100 meters underground into an open-air bath styled after a mountain bathing retreat. Indoors there's another tub, a cold plunge, and a sauna, including a steam sauna that regulars single out. Reviewers say the water runs on the lukewarm side, comfortable even for people who don't like very hot baths. Upstairs is a loft-style tatami corner and a lounge stocked with manga and magazines, plus a drink counter and a restaurant. The name nods to the Uji Jujo (宇治十帖), the Tale of Genji's Uji chapters.

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1 year ago· edited

304. Uji Natural Hot Spring Genji-no-Yu ★★ A super sento with onsen water for 800-1100. Opening hours are listed as 10:00 to 24:00 (Mon-Fri) and 06:00 to 24:00 (Sat-Sun). They stamp the Kansai 41 Super Sento 24/25 rally. There is a diner, massage, a chill-out area, and massage chairs. The photo of the outdoor area is from the internet, and it matches only roughly, judging by the layout this is the women's side. The water was more rust-colored (closer to the overexposed photo with water). 1. Outdoor area, no view. 1.1. Main outdoor bath, water a deep rust color, there is a smell from the water, temperature 41. There is a TV hanging there. 1.2. Two barrels with water the same color as the main bath. 1.3. Sauna. 1.4. Cold bath. 2. Indoor area. 2.1. Event bath with a bag of herbs, water temperature 41. 2.2. Bubble bath, clear water, temperature 40. 2.3. Carbonated bath with clear water, temperature 38. 2.4. Sauna. 2.5. Cold bath. Interesting water in Uji, Kyoto. The outdoor bath is good, and even though there is a TV hanging there, when it was crowded at the time of my visit it somehow fit the mood and the atmosphere was pleasant. I did not want to leave. A good place, recommended for a visit. 31.12.2024

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Last updated October 21, 2026