The bathing season on the continent is the period from May to September inclusive in the south in the Algarve and on the Lisbon Riviera. The warmest climate and water in the ocean can boast the tropical Portuguese islands of Madeira and the neighboring Porto Santo, whose banks are washed by the warm course of the Gulf Stream. Here the bathing season is longer - March-November inclusive, and if the ocean is calm, then it is also possible to swim in the winter.