AquaFonte lists 23 verified thermal springs in Portugal, each with its own page: temperature, minerals, treatments, and directions.
Water types found
Springs
Aquadome, Termas de Unhais da Serra
Beira Baixa (Serra da Estrela, Castelo Branco District) · 35.9°C
Billed as Portugal's first 'Mountain Spa,' drawing on weakly mineralized, sodium-bicarbonate thermal water from two springs on the slopes of Serra da Estrela.
Balneario Pedagogico de Vidago
Trás-os-Montes (Alto Tâmega, Vila Real District)
A pedagogical bathhouse in the village of Vidago built inside a former railway station, using the same naturally carbonated bicarbonate-sodium spring water long bottled as 'Vidago' mineral water.
Caldas da Cavaca
Beiras (Aguiar da Beira, Guarda District)
A weakly mineralized, sulphurous-sodium thermal spring on a five-hectare estate in Aguiar da Beira, at 580 m altitude.
Caldas de Monchique
Algarve · 32°C
Ancient Roman spa in the forested mountains above the Algarve, with one of the world's most alkaline natural springs, 25 km from Portimão cruise port.
Caldas de São Jorge
Madeira Island · 25°C
Madeira's volcanic mineral springs on the lush northern coast — cool carbonated waters rich in iron and silica, emerging from the island's ancient basaltic geology in a landscape of dramatic sea cliffs and terraced vineyards.
Caldeira Velha
São Miguel, Azores · 40°C
A lush natural hot spring waterfall set in ancient laurel forest on São Miguel, where warm thermal water cascades into clear turquoise pools — a hidden gem of the Azores.
Furnas Thermal Springs
Azores, São Miguel Island · 98°C
Volcanic crater springs in the Azores — bubbling caldeiras, iron-rich cold springs, and the world-famous cozido stew cooked underground.
Poca da Dona Beija
Azores (São Miguel Island, Furnas) · 39°C
A complex of five outdoor iron-rich thermal pools fed by volcanic geothermal water in the Furnas valley, São Miguel, Azores.
Ponta da Ferraria
São Miguel, Azores · 58°C
A dramatic natural hot spring on the Atlantic coast of São Miguel where volcanic water meets the ocean, creating tidal pools of varying temperature on a rugged lava shoreline.
Termas da Sulfurea
Alentejo (Alto Alentejo) · 20°C
A small, strongly alkaline sulphurous spa in the Alentejo village of Cabeço de Vide, with water dated by researchers to roughly 3,500 years old and used since Roman times.
Termas das Caldas da Rainha
Estremadura (Oeste, Leiria District) · 34°C
One of the oldest thermal hospitals in the world, founded in 1485 by Queen D. Leonor after she reportedly witnessed and experienced the healing effects of its sulphurous waters.
Termas de Chaves
Trás-os-Montes (Vila Real District) · 76°C
One of the hottest thermal springs in the Iberian Peninsula, in the marginal gardens of Chaves on the Tâmega River, with Roman origins.
Termas de Longroiva
Beiras (Guarda District) · 47°C
A sulphurous-bicarbonate thermal spring in the village of Longroiva, on the border of the Beira plateau and the Alto Douro.
Termas de Luso
Beiras (Mealhada, Aveiro District, Serra do Buçaco)
A weakly mineralized, chlorinated-sodium thermal spring in Luso village on the edge of the Buçaco forest, central Portugal.
Termas de Moncao
Minho · 49.5°C
Hyperthermal sulphurous springs on the Minho River in northern Portugal, in continuous use since the early 19th century.
Termas de Monfortinho
Beira Baixa (Castelo Branco District) · 30.5°C
A border-town spa in Beira Baixa built around the Fonte Santa ('holy spring'), one of Portugal's oldest thermal sources, with a modern bathing company operating since 1907.
Termas de Pedras Salgadas
Trás-os-Montes · 17°C
A historic mineral-water park in Trás-os-Montes, famous since the 19th century for its naturally sparkling, bicarbonated, iron-rich spring water.
Termas de S. Vicente
Douro Litoral (Norte, Porto District) · 18.5°C
A historic thermal spa near Penafiel with some of the most sulphurous, alkaline waters in Europe, built over Roman-era baths dating to 315 AD.
Termas de Sao Pedro do Sul
Beira Alta (Viseu District) · 68.7°C
Portugal's most-visited thermal spa, in continuous use since the Roman era, with sulphurous water among the hottest in the country at nearly 69°C at the source.
Termas de Vizela
Minho · 46.4°C
One of Portugal's best-known thermal towns since the 18th century, historically called the 'Queen of Portugal's Thermal Spas,' with sulphurous water emerging at over 46°C.
Termas do Carapacho
Azores (Graciosa Island) · 40°C
A seaside thermal spring at the foot of a volcanic elevation on Graciosa Island in the Azores, used therapeutically since at least the 1750s.
Termas do Geres
Minho (Terras de Bouro, Braga District, Peneda-Gerês National Park)
A mineral thermal spring inside Peneda-Gerês National Park with documented use dating to Roman times.
Terra Nostra Thermal Pool
Azores · 38°C
A large, iron-stained orange-brown thermal pool inside the historic Terra Nostra botanical garden in Furnas, São Miguel, fed by geothermal water within a volcanic crater.