According to Ministry of the Environment statistics, Kumamoto (Kyushu & Okinawa) has 55 onsen areas and 1,339 hot-spring sources. This page lists 30 onsen in Kumamoto with their water types. The most common water type among them is Simple Thermal Spring (11 onsen).
Source: Ministry of the Environment, FY2024 Hot Spring Utilization Survey (as of March 31, 2025). Best-known onsen = most annual Wikipedia views.
| Water Type | Count | Share |
|---|---|---|
| Simple Thermal Spring | 11 | 37% |
| Sulfur Spring | 8 | 27% |
| Chloride Spring | 6 | 20% |
| Bicarbonate Spring | 3 | 10% |
| Sulfate Spring | 1 | 3% |
| Other | 1 | 3% |
| Facility | Water Type |
|---|---|
| Yurakkusu | Unknown |
| Sakura-yu | Unknown |
| Kurokawa Onsen Ikoi no Ie A town-run day-use bathing facility in Kurokawa Onsen. | Simple Thermal Spring Simple spring |
| Onsen Town | Summary |
|---|---|
| Tsuetate Onsen Travelogue | The manga artist Tsuge Yoshiharu visited this hot spring in the 1960s–70s, and the visit is recorded in 'Johatsu Ryokou Nikki' (Diary of an Evaporation Journey), collected in his book Hinkon Ryokoki (Poverty Travelogue). The town sits along the gorge of the Tsuetate River, a headwater of the Chikugo River, with steam rising throughout. Details |
| Uchinomaki Onsen Geopark | Aso Geopark, home to the Aso caldera, was certified a Japan Geopark in 2009 and a UNESCO Global Geopark in 2014. Uchinomaki Onsen, one of its central hot spring towns, was visited by many literary figures including Natsume Soseki, Taneda Santoka, and the poet couple Yosano Tekkan and Akiko. Details |
| Hagenoyu Onsen Travelogue | One of the Waita Onsen village springs on the slopes of Mt. Waita, on the Kumamoto–Oita border. Simple sulfur water is piped to each of its four inns, and it is known for its mountainside views and free-flowing source water. Included in the Kyushu/Kinki chapter of Tsuge Yoshiharu no Onsen. Details |