It is best to come to Portugal in spring or summer. In winter there are clear differences between the north and south of the country. On the southernmost Algarve there are often warm, sunny days, and the sheltered beaches of the south allow you to sunbathe throughout the year. Evenings can be cold, but not enough to alienate tourists. Winter around Lisbon is mild but unpredictable - sunny and rainy days alternate. In the center and in the north, winters can be rainy and cool, but not cold. The periods of rain are interrupted by sunny weather, creating an excellent opportunity for walks. It is getting warmer throughout the country in May and June, and high temperatures persist until September. With the exception of the Algarve, nights can be cool even in summer, especially on the coast of Cascais and Estoril near Lisbon. On the west coast, the water in the Atlantic is mostly cool (22 ° C) until July. In the south it heats up earlier. In summer, the whole country is hot and sunny days seem endless.