Chomei-ji Onsen - Amahanoyu Hot Spring

長命寺温泉天葉の湯ちょうめいじおんせんあまはのゆ

Bathing Complex

Kansai·Shiga

+81 748-31-1126 amahanoyu.com

Day Use

Yes

10:00–21:00

¥1,200

Adults (13+) ¥1,200 Mon-Thu, ¥1,500 Fri/Sat/Sun/holidays. Late-night surcharge from 6/22: ¥1,500 from 21:00 (Mon-Thu), ¥1,800 from 22:00 (Fri-Sun). Towel rental included in price.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

SaunaYes

Dry heat sauna room

Cold BathYes

Cold water plunge bath, typically used after sauna

Capabilities

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooWith Conditions

Allows entry with visible tattoos

Tattoos allowed only during late-night hours: Mon-Thu 21:00-23:00, Fri/Sat/Sun/holidays 22:00-24:00

DiningYes

Restaurant or dining open to visitors (not just hotel meal plans)

WashingYes

Shower, wash stations, soap and shampoo provided

TowelsYes

Towels available to rent or borrow

Rest AreaYes

Relaxation space for after bathing

長命寺温泉天葉の湯

Chomei-ji Onsen Amahanoyu

Operated by · 株式会社心璞

ラ

Radon

Color: colorless and transparent
Taste: not recorded
Odor: odorless

Sodium-Calcium Chloride-Bicarbonate spring

pH 8.3Weakly alkalineHigh radon

Composition fingerprint0.4 g/kg dissolved · Hypotonic

Na⁺76

Ca²⁺24

Cl⁻73

HCO₃⁻20

◀ 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

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

A simple weakly-radioactive spring carrying enough radon to fall in the "hormesis" tradition, with radon measured at 330 Bq/kg. Weakly alkaline at pH 8.25, it is soft on the skin, colorless, transparent and odorless. Mineralization is light at 429 mg/kg, making for a gentle, low-stimulus bath.

Sampled at wellhead·Analyzed Nov 17, 2023·株式会社日吉·Cert no. CV1811

Explore the water

Views

Lake

Highlights

Electric Bath

About

Chomeiji Onsen Amahanoyu (長命寺温泉, Chomeiji Onsen / Amahano-yu) sits right on the bank of Lake Biwa in Omihachiman. The outdoor area has small pot baths (tsubo-buro, 壺湯) and a hinoki cypress bath, both looking out over the lake. Inside there are several pools including a carbonated bath, an electric bath, a lying-down bath, and a radium spring kept flowing fresh. The wood-fired sauna (maki-sauna, 薪サウナ) and a high-temperature room are paired with a deep cold plunge fed by natural groundwater. After bathing, the second-floor restaurant and terrace have the same lake view.

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Yulia K

10 months ago

A super sento with onsen water on the shores of Lake Biwa. Large complex, the only one in Omihachiman, tons of cars in the parking lot. In the women's section there were about 10-12 people; they say there were more in the men's. Outside there's no view, but there are deck chairs, a hinoki bath, and a stone bath with warm water. Inside: a small 38-degree bath, a large 40-degree one, a separate electric bath, a cold bath, and a jacuzzi-style one. An aroma sauna and a large wood-fired steam room (ours was 93 degrees). Photos aren't even on the official website. They give out 2 towels. Bottled milk available. Price on weekends: 1500 for adults, 500 for kids. There's a restaurant. Perfect after a packed day.