Sujiyu Onsen: Day-Use Hot Spring Baths & Prices (Oita)

Rising on a plateau at about one thousand meters at the foot of the Kuju range, Sujiyu Onsen is a celebrated spring known for its powerful cascade baths. The utase hall, where water falls like a waterfall onto your shoulders and back, is the symbol of this hot spring. Amid the quiet mountain setting, you can enjoy an abundant flow of water and refreshingly clear air.

Highlights

The cascade baths, where water pours down from numerous spouts, have long been cherished for easing stiff shoulders and fatigue. The water is a simple spring or sodium chloride type, with a fairly high source temperature. The clear highland air and mountain views are also appealing, with the vast nature of Kuju spreading nearby. Strolling leisurely through the simple hot spring town is another pleasure.

Enjoying the Seasons

From spring into summer the cool highland climate feels pleasant, and a bath amid fresh greenery is truly special. Autumn brings splendid foliage across the Kuju range, while winter offers the luxury of soaking in warm water amid snowy scenery. Thanks to the high elevation, the changes of the seasons are keenly felt.

Access and Basic Information

It sits in the mountains of Kokonoe Town in Kusu District, where access by car is convenient. Since it is about fifty minutes by community bus from Bungo Nakamura Station on the JR Kyudai Main Line, travel is mainly by local bus or car. The location pairs well with nearby attractions such as the Kokonoe Yume Suspension Bridge and the Kuju Highlands.

Practical Travel Notes

Because it sits on a plateau at one thousand meters, the mornings and evenings can turn chilly even in summer, so having an extra layer is reassuring. Early summer greenery and autumn foliage are recommended, when a bath in the clear air feels soothing. The cascade baths of the utase hall are quite forceful, so aim the water at your shoulders and back within your comfort. Allow one to two hours for a bath and a stroll through the town. Combined with the Kokonoe Yume Suspension Bridge or a Kuju Highlands drive, it makes for a full day itinerary. Budget wise, day use bathing is around a few hundred yen.

A Quick Tip

Because it is on a plateau, the mornings and evenings can turn chilly even in summer, so having an extra layer to put on is reassuring. The cascade baths are quite forceful, so enjoy them within your comfort. Winter can bring icy or snowy roads, so take care with your equipment when driving.

Practical Information for Your Visit

• Spring quality: A simple hot spring and a sodium chloride spring.
• Source temperature: 58 to 63 degrees.
• Indications: The Japan Spa Association lists autonomic nervous instability, insomnia, depressive states, chronic pain in the muscles and joints, sensitivity to cold and reduced gastrointestinal function, and regards the springs as well suited to rest and recuperation. Oita Prefecture's tourism information introduces their benefits for neuralgia and rheumatism.
• Utase Daiyokujo: Bathing fee 400 yen, open 6:00-21:30, all year round. Eighteen streams of hot water fall from a height of 3 m.
• Iwan-yu and Yakushi-yu: Bathing fee 400 yen, open 7:00-22:00, all year round. Iwan-yu is an open-air rock bath and Yakushi-yu an indoor cypress bath, and the men's and women's baths are switched daily.
• How to bathe: At Utase Daiyokujo you buy a coin from the vending machine beside the entrance and pass through a turnstile gate. If you need to re-enter after hours when no staff are present, for example because you left something behind, you have to buy another coin, so keep an eye on your belongings.
• Towels and soap: Utase Daiyokujo neither provides nor sells them. Bring your own towel, shampoo and body soap.
• Facilities: Utase Daiyokujo has toilets, paid coin lockers (100 yen) and a hairdryer.
• Showers: There are none. The washing area has only taps for hot water and cold water.
• Lighting: The lights at Utase Daiyokujo switch on and off automatically. They may not yet be on right after opening time and they go off at closing time, so take care to be out within the operating hours.
• Footbath: There is a shared footbath at Ikoi no Hiroba behind Utase-yu.
• Parking: There is a car park in front of Utase Daiyokujo, but it has few spaces; when it is full, use the public car park about a 3-minute walk away. Sujiyu Onsen has two free public car parks.
• Access (by car): About 30 minutes from Kokonoe IC on the Oita Expressway via the Shikisai Road.
• Access (by train and bus): Get off at Bungo-Nakamura Station on the JR Kyudai Main Line and take the bus bound for Sujiyu Onsen, about 50 minutes. If you use the Kyushu Odan Bus, the stop is Sujiyu Onsen Iriguchi.
• The character of the hot spring town: There are no commercial facilities such as convenience stores or restaurants. It is reassuring to have drinks and snacks ready in advance.
• Altitude and clothing: At an altitude of about 1,000 m, mornings and evenings are chilly even in summer, so bring an extra layer. In winter the roads freeze and there is snow, so if you are driving be prepared with the right tires.
• How long to allow: About an hour if you are just bathing. Allow around 2 hours to walk around all three bathhouses at a comfortable pace.
• Address: Sujiyu Onsen, Yutsubo, Kokonoe Town, Kusu District, Oita Prefecture

Komatsu Jigoku, Closed for Five Years by Torrential Rain, Has Reopened

Right beside Sujiyu Onsen is Komatsu Jigoku, where steam blasts up from the ground. It was damaged by the torrential rain of July 2020 and had long been off limits, but after the completion of restoration work it reopened on July 19, 2025. This was its first reopening in five years.

Admission is free (there is a donation box for environmental conservation at the entrance). There is a free car park with around 30 spaces, and it takes about 15 minutes on foot from the car park to the steam baths and rest area at the far end. The steam baths can be used freely, and baskets for placing ingredients are permanently installed. However, there are no vending machines or toilets within the grounds, and visitors are asked to refrain from eating and drinking there. It is dangerous after dark, so visit between sunrise and sunset.

Information Sources

The bathing fees and opening hours of Utase Daiyokujo, Iwan-yu and Yakushi-yu, the year the springs were discovered (958) and the year the hot spring resort was established (1658), the fires of Meiji 30 and Showa 24, the cleaning frequency and Legionella testing of the public bathhouses, the coin-operated entry system, the availability of towels and amenities, the coin lockers and hairdryer, the car parks and access by car and rail, and the admission fee, car park and walking time at Komatsu Jigoku were all confirmed on the official website of the Sujiyu Onsen Tourism Association (the pages introducing the hot springs, access, frequently asked questions and news). The spring quality and source temperature and the name of the Kyushu Odan Bus stop come from publicly available information about the hot spring resort, and the indications were taken from the Japan Spa Association's hot spring resort data and the introduction to Utase-yu on Oita Prefecture's official tourism information website. Details are subject to change, so please check the official information before you set out.