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Beppu Ohirayama Onsen OKATANOYU

別府大平山温泉 おかたの湯べっぷおおひらやまおんせん おかたのゆ

Other
Beppu OnsenKannawa Onsen
Kyushu & Okinawa·Oita
0977-22-4126okatanoyu.com

Day Use

Yes
09:00–23:00, 11:00–23:00

11:00~ Reception until 22:00, Sat, Sun, holidays 9:00~ Reception until 22:00

¥1,500

Private bath from ¥1,500

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Policies & Services

TattooYes

Allows entry with visible tattoos

TowelsYes

Towels available to rent or borrow

ParkingYes

On-site or nearby parking available

20 spaces

おかたの湯

Okata-no-yu Hot Spring

Operated by · 有限会社 大平山産業

湯
Simple
Color
Colorless and clear
Taste
Tasteless
Odor
Faint mineral note

Sodium-Calcium Bicarbonate spring

pH 7.4NeutralHot source · 71°CHigh silica
Composition fingerprint0.7 g/kg dissolved · Hypotonic
Na⁺66
Ca²⁺25
HCO₃⁻72
SO₄²⁻13
Cl⁻13
◀ 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
  • Aches & jointsstiff shoulders
  • Smooth skindry, rough skin
  • Recoveryfatigue, stress

A hot simple thermal spring (71.1 °C, neutral pH) — light in mineralization at 673 mg/kg dissolved solids, yet rich in metasilicic acid (195.7 mg/kg). Colorless and clear at the wellhead; by 24 hours after sampling the water has taken on a faint yellow-brown tint and a mild mineral note. The silica leaves the kind of thin film that makes skin feel noticeably smoother — the source sits squarely in the Japanese 'beauty-water' family.

Sampled at wellhead·Analyzed Mar 11, 2022·大分県衛生環境研究センター·Cert no. 整理研第217号の8

Explore the water

Programs

About

A facility specializing in a variety of family baths. It is about a 5-minute drive from Beppu Interchange, making access convenient. Surrounded by the greenery of trees in a rich natural environment, the bath tubs are diverse, made of stone, rock, cypress wood, and more. There are open-air baths, semi-open-air baths, and indoor baths. Detached baths arranged like bungalows allow you to relax without worrying about neighbors, and there are also row-house type baths. Each family bath has a different atmosphere, so you will want to visit many times and soak in various types of baths. Of the 10 rooms, 2 are free-flowing hot spring baths, and 8 are coin-operated baths. You can fully enjoy fresh water just for yourself with the coin-operated baths, as well as the benefits of the free-flowing hot spring baths.

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Anna L

1 year ago

We were lucky — a rotenburo was available. It was very large, beautifully decorated, with a roof and lighting. We didn't need to fill the water ourselves, everything was already filled, but you could freely adjust the temperature. We added cold water and I was surprised at how quickly such a large bath cooled down.

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Sergey M
2 years ago

154. Beppu Ohirayama Onsen OKATANOYU An onsen that only offers private baths. 10 to choose from, prices from 1500 to 2500 yen. The nearest one was 1500 - took that one. Stamp available. When they led me to my bath, it turned out the tub was empty and I needed to fill it myself (not sure if all their baths are like this). To do that, you drop a special token and onsen water pours from a large pipe. You can also mix hot water labeled as onsen with cold (obviously tap) water from a faucet. The onsen water was clear and very hot. Without diluting with cold water, sitting in would've been impossible. Breathing inside the room was good. Solid place - really cool experience filling the water yourself, and the bath selection is interesting too.

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Last updated July 15, 2026