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Shirahamakan

白浜館しらはまかん

Lodging
Nanki-Shirahama Onsen
Kansai·Wakayama
0739-43-5151shirahamakan.com
[email protected]

Day Use

Yes
13:00–20:00

The bath stays open until 22:00, but last entry for day-use guests is 20:00.

¥1,000

Child (ages 6 to 11) is 500 yen. No advance reservation is needed, but day-use guests cannot leave a car in the parking lot, and towels are not provided, bring your own.

Bathing & Water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

OnsenYes

Uses natural hot spring water

Capabilities

Private BathNo

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

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

TattooNo

Allows entry with visible tattoos

Tattoos of any size are refused in the communal baths (大浴場); private in-room baths are unaffected.

KidsWith Conditions

Welcomes children and families

No hard age rule; entry with young children is left to parents' own judgement.

DiningNo

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

TowelsNo

Towels available to rent or borrow

ParkingYes

On-site or nearby parking available

上山湯

Kamiyama-yu Spring

Operated by · 白濱温泉土地株式会社

塩
Chloride
Color
colorless and clear
Taste
moderately salty
Odor
faint hydrogen sulfide

Sodium Chloride spring

Hot source · 75°CStrong saltHigh silica
Composition fingerprint12.6 g/kg dissolved · Hypertonic
Na⁺85
Cl⁻76
HCO₃⁻17
◀ 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
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin

A sodium chloride spring in strong-salt territory — dissolved solids of 12,620 mg/kg sit well above ocean salinity and leave a thick mineral coating on the skin. At a wellhead temperature of 75 °C it ranks among Japan's hottest natural sources, with a faint hydrogen sulfide note and a moderate salty tang at the source. Metasilicic acid at 95 mg/kg adds a thin silica film under the salt, softening the finish.

Sampled at wellhead·Analyzed Oct 4, 2017·和歌山県環境衛生研究センター·Cert no. 温泉第1080号

Explore the water

Highlights

Foot Bath

Programs

About

Shirahamakan sits right on Shirarahama Beach (白良浜), close enough to reach the sand in a couple of minutes on foot. The shared baths are kakenagashi, fed straight from a sulfur spring: an indoor bath where mineral deposits have built up into a small stone cascade, plus three separate outdoor tubs on each of the men's and women's sides, including a rock bath and a tub made from Kishu plum barrels. The water carries a faint sulfur smell and a soft, silky feel that leaves skin smooth. Of the ryokan's 41 rooms, several have their own outdoor tub or foot bath filled with the same spring water, set on a garden terrace or balcony. There's no restaurant, guests use a shared kitchen instead, and the building itself is older and a little worn, with the easygoing feel of an old-fashioned family holiday rather than a polished resort.

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4.0

1 review

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SM
Sergey M
1 year ago

629. Hotel Shirahamakan, Shirahama, Wakayama ★★ Higaeri for 1000. Higaeri stated as 13:00 to 20:00. Part of the Shirahama tegata (2 stickers). They issue Toreco cards for the onsen. Staff was Japanese and very approachable. During rush hour they had trouble finding a taxi, but the young guys persisted and found one; while I waited, they lent me a charger. 1. Epic indoor bath styled like something out of the movie Alien. Clear slightly yellowish water with some fine mineral deposits on the surface. 45 degrees. 2. Outdoor area. Not as striking as the indoor bath, but also has its own atmosphere and visual appeal (apparently some renovation was underway). 2.1. Main bath. Clear slightly yellowish water. 42 degrees. 2.2. Round bath. Clear slightly yellowish water. 41 degrees. A cool distinctive onsen. If the above doesn't put you off, recommended for a visit. 17.06.2025

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Last updated July 14, 2026