Shiro no Yu is a 30-year-old bathhouse in Kami-Kumamoto reborn as a men-only sauna themed on Kumamoto history. Its two Finnish saunas have Harvia heaters with auto and self-löyly: Reigando, a dark tiled room modelled on the cave where Miyamoto Musashi wrote The Book of Five Rings, and the wood-lined Honmaru. Two outdoor cold baths use local well water, and staff run scheduled Aufguss. Entry is ¥1,200 with no time limit, towels included; ladies' days are held now and then. Closed Mondays.
Takano-yu is a neighbourhood sento in Sakae-machi, Higashi ward, near Kengun-machi tram stop, and a member of the Kumamoto public bathhouse association. It heats tap water, has a sauna, and the proprietress recommends the soft water from bakuhanseki stone set into the tubs. Bring your own towel and soap, as none are lent. Open 2 PM to 10 PM, closed Mondays; adult entry is ¥550.
Suisyun is a hot-spring day spa inside AEON Mall Kumamoto in Kashima, just south-east of the city. Its spring-fed outdoor rock bath sits beside a high-temperature löyly sauna with auto-löyly every hour on the hour, a self-löyly meditation sauna in the men's bath, a moisture salt steam sauna in the women's bath, and a Finnish barrel sauna on the stone-bed terrace. The cold bath is kept near 15 °C and is 105 cm deep on the men's side. Open 9 AM (6 AM Sundays and holidays) to 1 AM.
Katarunomori is a hot-spring bath and campsite in Jonan, in the south of Kumamoto city, reopened as a new complex after the old Jonan Tennen Onsen ryokan was damaged in the 2016 earthquake and closed. Its alkaline simple spring fills an indoor bath, an outdoor bath and private family baths, and the main bath has a wood-lined sauna with a self-löyly stove. Adult entry is ¥800. Open 9 AM to 10 PM, last entry 9 PM, closed Wednesdays unless a public holiday.
Daifuku-yu is a neighbourhood sento near Fujisakigu-mae station in Tsuboi, a member of the Kumamoto public bathhouse association. It has three saunas, described by the owner as high-temperature, low-temperature and a 'freezing' room, alongside nine kinds of bath, and its cold bath is fed by cold spring water. Sauna use costs ¥100 on top of the standard ¥550 adult bath fee. Open 1 PM to 11 PM, closed Tuesdays.
Batten no Yu is a natural hot-spring super sento near Ezu Lake in Higashi ward, run by the Kumamoto Spa Resort Group. Its main bath has nine kinds of hot-spring bath and a jacuzzi, with 15 private family baths in the main building and the Manyokan annex. Sauna-listing sites record a sauna and cold bath in both the men's and women's sides. Adult entry is ¥750, or ¥550 if you bring your own shampoo. Open daily 10 AM to 2 AM.
Agannasse is a hot-spring day spa in Kita ward fed by Kikunan Onsen, a sodium chloride and bicarbonate spring billed as a 'beauty bath'. It has a löyly sauna where staff pour aroma water on the stones and fan the heat, a salt sauna in the women's bath, a Korean-style jjimjilbang and stone-bed area, an Asian-garden outdoor bath, and a barrel sauna that can be booked privately. Two-hour bath-only entry is ¥800 on weekdays. Open 10 AM to midnight; a relax-room refit runs until 6 December 2026.
Yulax is a 24-hour natural hot spring and sauna house near Heisei station, known among Japanese sauna fans as the 'Holy Land of the West'. Men and women each have three saunas: a classic sauna with an Aufguss show every hour from noon to 1 AM, a near-dark meditation sauna and a steam-filled 'Great Aso eruption' sauna. The big cold bath runs on groundwater from 200 m down. Bath-only entry is ¥900 on weekdays and ¥1,000 at weekends; baths close 8 to 10 AM for cleaning.
Yuzuki is the bathhouse of Mifune Terrace, a hotel, restaurant and bathing complex in Mifune town south-east of Kumamoto city, opened in 2022. It has three saunas, a self-löyly room around 80 °C, a dry sauna over 100 °C and a 40 to 50 °C steam room, plus a 'gokurei' single-digit cold bath below 10 °C next to a regular cold bath, a large indoor bath, an outdoor bath, a hot-spring source bath and family baths. Bath-only entry is ¥760 on weekdays and ¥810 at weekends. Open 5:30 AM to 11 PM.
Tatsu no Yu is a small neighbourhood sento in Kotohira-honmachi, between Minami-Kumamoto and Heisei stations, heated from tap water and run by a member of the Kumamoto public bathhouse association. It has a sauna, and the proprietress recommends its soft water, softened by bakuhanseki stone set into the tubs. Towels, soap and shampoo can be borrowed. Open 3 PM to 10 PM, closed on the 1st, 5th, 11th, 15th, 21st and 25th of each month; adult entry is ¥550.
Candeo Hotels Kumamoto Shinshigai has a rooftop Sky Spa in the downtown Shinshigai district that sells day-visitor packages. Its auto-löyly saunas sit inside the open-air terrace: the men's runs at 80 to 90 °C with an iki stove and seats 16, beside a 17.5 °C cold bath and a 12th-floor cooling terrace over the city, and the women's terrace looks towards Kumamoto Castle. It won a Saunachelin 2020 special award. Day entry 3 to 11 PM is ¥1,400 on weekdays; a cheaper morning slot runs 6 to 11 AM.
Yuya Suizen is a 'luxury sauna and spa' on the second floor of the Matsuya annex beside Suizenji park, opened in 2023 and open to non-guests. Its single-sex Ohyu baths are filled with natural groundwater from the Aso aquifer, and the self-löyly sauna is built with Aso basalt and scented with an original green-tea aroma water. Private saunas called Yokusu can also be booked. Day visits start at ¥3,000; open 6 to 11 AM and noon to midnight, and the baths are for junior-high age and over.
Shiro no Yu is a 30-year-old bathhouse in Kami-Kumamoto reborn as a men-only sauna themed on Kumamoto history. Its two Finnish saunas have Harvia heaters with auto and self-löyly: Reigando, a dark tiled room modelled on the cave where Miyamoto Musashi wrote The Book of Five Rings, and the wood-lined Honmaru. Two outdoor cold baths use local well water, and staff run scheduled Aufguss. Entry is ¥1,200 with no time limit, towels included; ladies' days are held now and then. Closed Mondays.
Takano-yu is a neighbourhood sento in Sakae-machi, Higashi ward, near Kengun-machi tram stop, and a member of the Kumamoto public bathhouse association. It heats tap water, has a sauna, and the proprietress recommends the soft water from bakuhanseki stone set into the tubs. Bring your own towel and soap, as none are lent. Open 2 PM to 10 PM, closed Mondays; adult entry is ¥550.
Suisyun is a hot-spring day spa inside AEON Mall Kumamoto in Kashima, just south-east of the city. Its spring-fed outdoor rock bath sits beside a high-temperature löyly sauna with auto-löyly every hour on the hour, a self-löyly meditation sauna in the men's bath, a moisture salt steam sauna in the women's bath, and a Finnish barrel sauna on the stone-bed terrace. The cold bath is kept near 15 °C and is 105 cm deep on the men's side. Open 9 AM (6 AM Sundays and holidays) to 1 AM.
Katarunomori is a hot-spring bath and campsite in Jonan, in the south of Kumamoto city, reopened as a new complex after the old Jonan Tennen Onsen ryokan was damaged in the 2016 earthquake and closed. Its alkaline simple spring fills an indoor bath, an outdoor bath and private family baths, and the main bath has a wood-lined sauna with a self-löyly stove. Adult entry is ¥800. Open 9 AM to 10 PM, last entry 9 PM, closed Wednesdays unless a public holiday.
Daifuku-yu is a neighbourhood sento near Fujisakigu-mae station in Tsuboi, a member of the Kumamoto public bathhouse association. It has three saunas, described by the owner as high-temperature, low-temperature and a 'freezing' room, alongside nine kinds of bath, and its cold bath is fed by cold spring water. Sauna use costs ¥100 on top of the standard ¥550 adult bath fee. Open 1 PM to 11 PM, closed Tuesdays.
Batten no Yu is a natural hot-spring super sento near Ezu Lake in Higashi ward, run by the Kumamoto Spa Resort Group. Its main bath has nine kinds of hot-spring bath and a jacuzzi, with 15 private family baths in the main building and the Manyokan annex. Sauna-listing sites record a sauna and cold bath in both the men's and women's sides. Adult entry is ¥750, or ¥550 if you bring your own shampoo. Open daily 10 AM to 2 AM.
Agannasse is a hot-spring day spa in Kita ward fed by Kikunan Onsen, a sodium chloride and bicarbonate spring billed as a 'beauty bath'. It has a löyly sauna where staff pour aroma water on the stones and fan the heat, a salt sauna in the women's bath, a Korean-style jjimjilbang and stone-bed area, an Asian-garden outdoor bath, and a barrel sauna that can be booked privately. Two-hour bath-only entry is ¥800 on weekdays. Open 10 AM to midnight; a relax-room refit runs until 6 December 2026.
Yulax is a 24-hour natural hot spring and sauna house near Heisei station, known among Japanese sauna fans as the 'Holy Land of the West'. Men and women each have three saunas: a classic sauna with an Aufguss show every hour from noon to 1 AM, a near-dark meditation sauna and a steam-filled 'Great Aso eruption' sauna. The big cold bath runs on groundwater from 200 m down. Bath-only entry is ¥900 on weekdays and ¥1,000 at weekends; baths close 8 to 10 AM for cleaning.
Yuzuki is the bathhouse of Mifune Terrace, a hotel, restaurant and bathing complex in Mifune town south-east of Kumamoto city, opened in 2022. It has three saunas, a self-löyly room around 80 °C, a dry sauna over 100 °C and a 40 to 50 °C steam room, plus a 'gokurei' single-digit cold bath below 10 °C next to a regular cold bath, a large indoor bath, an outdoor bath, a hot-spring source bath and family baths. Bath-only entry is ¥760 on weekdays and ¥810 at weekends. Open 5:30 AM to 11 PM.
Tatsu no Yu is a small neighbourhood sento in Kotohira-honmachi, between Minami-Kumamoto and Heisei stations, heated from tap water and run by a member of the Kumamoto public bathhouse association. It has a sauna, and the proprietress recommends its soft water, softened by bakuhanseki stone set into the tubs. Towels, soap and shampoo can be borrowed. Open 3 PM to 10 PM, closed on the 1st, 5th, 11th, 15th, 21st and 25th of each month; adult entry is ¥550.
Candeo Hotels Kumamoto Shinshigai has a rooftop Sky Spa in the downtown Shinshigai district that sells day-visitor packages. Its auto-löyly saunas sit inside the open-air terrace: the men's runs at 80 to 90 °C with an iki stove and seats 16, beside a 17.5 °C cold bath and a 12th-floor cooling terrace over the city, and the women's terrace looks towards Kumamoto Castle. It won a Saunachelin 2020 special award. Day entry 3 to 11 PM is ¥1,400 on weekdays; a cheaper morning slot runs 6 to 11 AM.
Yuya Suizen is a 'luxury sauna and spa' on the second floor of the Matsuya annex beside Suizenji park, opened in 2023 and open to non-guests. Its single-sex Ohyu baths are filled with natural groundwater from the Aso aquifer, and the self-löyly sauna is built with Aso basalt and scented with an original green-tea aroma water. Private saunas called Yokusu can also be booked. Day visits start at ¥3,000; open 6 to 11 AM and noon to midnight, and the baths are for junior-high age and over.