Ibusuki Onsen (Sunamushi Kaikan Saraku)

What to expect

Ibusuki Onsen is the name for a group of hot springs on the eastern side of Ibusuki, a city near the southern tip of the Satsuma Peninsula in Kagoshima. It is famous for one thing above all: the sunamushi, or sand bath. Instead of getting into water, you lie down on the beach in a cotton yukata and staff with shovels bury you up to the neck in sand warmed from below by hot springs.

The heart of it is Surigahama, a stretch of beach about 1 km (0.6 miles) long on the coast southeast of Ibusuki Station, where the hot water comes up through the shore. Saraku, the public sand-bath hall run by the Ibusuki Onsen town development corporation, stands right on that beach, and it is the place most day visitors use. Some of the seafront hotels along Surigahama offer sand baths too.

The experience is short and intense. The sand at Saraku sits at about 122°F50°C, and each person gets 30 to 50 kg of it. Within roughly 10 minutes most people are sweating hard. It is heavy and hot, but the volcanic grains are coarse and dark, which leaves small air gaps, so it feels damp and packed rather than suffocating. Afterwards you rinse off and soak in the indoor bath.

The sand and the water

Ibusuki’s beach sand is black because the area was built by repeated volcanic eruptions. Saraku says the shore has springs at about 176°F80°C with steam you can sometimes see, and that you only need to dig a few metres anywhere in this part of town to hit hot water.

The water is a sodium chloride spring. Saraku lists its pH at 7, and compares it with sea water: about a third of the chloride and a fifth of the sulphate, so it tastes only faintly salty. The leading theory is that it is ancient sea water trapped deep underground, rather than the modern sea simply heated up. Saraku cites a 1985 Kagoshima University study on the effects of sand bathing; we have not repeated its health claims here. The operator does not say whether the indoor bath water is heated, circulated or chlorinated.

Usually the burial happens in a roofed, all-weather area on the beach. On spring-tide low tides with good weather and good sand, staff may move it to the open shore by the waterline for a few hours either side of low tide. It is their call on the day and cannot be promised.

How a visit works

1. Pay at reception. Take the escalator to the second floor, choose a plan and get a yukata in your size. Extra-large and extra-extra-large sizes exist.
2. Change. In the locker room, put your shoes in a bag, change into the yukata only and take your towel and locker key. Do not wear your own underwear or a swimsuit under the yukata; rent the inner garment if you want one.
3. Walk to the beach. Men and women come out of separate changing rooms, put on sandals and walk together down a short flight of steps to the sand area. Tell staff in advance if you have trouble with steps; you may bring your own sandals.
4. Get buried. Staff dig a hollow, you lie down with the towel round your head, and they shovel sand over you.
5. Rinse and bathe. Return the sandals, drop the yukata at the return counter, shower off the sand (check between your toes and on your neck) and wash before you get into the hot spring bath. There is also a dry sauna.

Phones and cameras cannot come into the sand area, the changing rooms or the baths, even for people who are not bathing. Saraku sells a paid photo service by its own staff instead.

Prices and booking

Prices are from Saraku’s site in October 2026. Adults are junior high age and up.

Plan	Includes	Adults	Children
Minimum set	Sand bath, indoor bath, yukata	¥1,500	¥800
Towel set	Above + souvenir towel	¥1,800	¥1,100
Saraku set	Above + rented bath towel	¥2,100	¥1,400
Inner set	Saraku set + rented inner garment	¥2,600	¥1,900
Indoor bath only	No sand bath, no yukata	¥800	¥400

A face towel is ¥300 to buy, a bath towel ¥300 to rent and the inner garment ¥500. Rinse-in shampoo and body soap are in the bath, and hair dryers are free. Cards, transit IC cards, e-money and QR payments are accepted.

Special rates apply during holiday periods. In the 2026 fiscal year these are April 29 to May 6, August 11 to 16, September 19 to 23 and December 29, 2026 to January 3, 2027. The special prices are posted on Saraku’s price page.

There are no bookings. Saraku runs a numbered queue and shows the current wait on its website. When waits get very long, it may stop accepting sand-bath visitors earlier than usual.

Getting there

Saraku is at 5-25-18 Yunohama, Ibusuki.

• By train: the JR Ibusuki Makurazaki Line runs from Kagoshima-Chūō Station to Ibusuki in about an hour. From Ibusuki Station it is about 1.5 km (0.9 miles), roughly a 20-minute walk or 5 minutes by taxi. Kagoshima Kōtsū buses from the station stop at “Sunamushi Kaikan-mae” right outside.
• From Kagoshima Airport: the airport bus to Ibusuki Station takes about 2 hours (about 1 hour 47 minutes on the fastest runs). Driving takes about 1 hour 35 minutes.
• By car: about 10 minutes from Ibusuki IC on the Ibusuki Skyline. Free parking for about 90 cars, which fills at busy times.

When to go

Saraku is open every day from 8:30 to 21:00, last entry 20:00. On weekdays the sand bath pauses from 12:00 to 13:00. Weekday mornings are the easiest time. Golden Week, Obon and New Year bring both crowds and higher prices. Maintenance closures last about a week each July and December, and in 2026 fell on July 6 to 10 and December 14 to 18. Saraku also closes in severe storms, which matters in typhoon season.

Where to stay nearby

Saraku has no rooms. The hotel district runs along the coast south of Ibusuki Station around Surigahama, and some seafront hotels have sand baths of their own. Lake Ikeda is about 15 minutes by car and Mount Kaimon about 30 minutes, both easy half-day trips. For another big Kyushu spa town, see Beppu Onsen.

Safety notes

• Heat load: the sand is about 122°F50°C and heavy. Tell staff at once if it gets too hot; they can lighten it.
• Saraku’s own exclusions: it asks people with high blood pressure (180/100 or more), heart disease, arrhythmia, angina, lung disease, inflammation or a fever, pregnant women, people with pacemakers and anyone menstruating not to use the sand bath. Check with your doctor first if you have a chronic condition.
• Children: they must be able to say clearly when they are too hot.
• Weather: the walk between the building and the sand is outdoors, so take care on wet steps in rain and wind.