AquaFonte lists 8 verified thermal springs in Thailand, each with its own page: temperature, minerals, treatments, and directions.
Water types found
Springs
Chae Son Hot Springs
Lampang Province (Mueang Pan District) · 75°C
A cluster of sulphurous hot springs inside Chae Son National Park, 75 km from Lampang, hot enough to hard-boil an egg in about 17 minutes.
Hin Dad Hot Spring
Kanchanaburi Province (Thong Pha Phum District) · 50°C
A calcium-carbonate hot spring on Highway 323 in Kanchanaburi, discovered by Japanese troops building the WWII Death Railway, with three pools around 40-55°C.
Kantang Hot Spring Forest Park
Trang Province (Kantang District) · 70°C
A Royal Forest Department park in Trang province where natural hot springs feed three concrete soaking pools inside a lowland tropical forest.
Pha Soet Hot Springs
Chiang Rai Province (Mueang Chiang Rai District) · 73°C
A community-managed hot spring about 20 km from Chiang Rai city, with a source above 73°C cooled to a communal soaking pool around 39°C.
Pong Arng Hot Springs
Chiang Mai Province (Chiang Dao District) · 64°C
A forest hot spring inside Pha Daeng National Park near Chiang Dao, with two earthen pools ranging from about 40°C to 64°C and no sulphur smell.
Raksawarin Hot Springs and Public Park
Ranong Province · 65°C
A free public park two kilometers from Ranong town where three natural pools known as Father, Mother and Child surface at a steady 65°C.
San Kamphaeng Hot Springs
Chiang Mai Province (Mae On District) · 100°C
A sulphurous geothermal park east of Chiang Mai where natural geysers shoot boiling water up to 20 meters into the air.
Tha Pai Hot Spring
Mae Hong Son Province (Pai District) · 80°C
A mineral-rich hot spring inside Huai Nam Dang National Park, about 8 km south of Pai, where source water near 80°C cools into bathing pools around 34-42°C.