São Torpes beach in Sines, Alentejo (160 km from Lisbon) has the warmest seawater in Portugal; Understand the phenomenon On the Alentejo coast, just over 160 kilometers from Lisbon, the sea waters are warm like those of a bathtub. More precisely: they reach around 30ºC
Continued: The white elephant uses the Atlantic waters to cool the plant, and when they return to the beach they are warm. It has been so for decades, day and night. The magazine also writes that the look may not be "tempting", but that the waters are clean and transparent. “They can have waves or be flat like a lagoon.
But beware: when the tide is full, the hot water does not feel so much. If you jump into the water and feel the shock of the temperature, then know that it is best to wait for the tide to begin to leak.