Portugal climate and when to go Portugal

Climate
The weather usually stays warm from May to September in Portugal.Winter starts in November or December and lasts to February or March. Especially in the north and central regions, including Lisbon, the winter is rainy and chilly.

The Algarve is moderate year-round, with extremely hot summers and a lot of sun even in the winter. Midsummer is also extremely hot in Alentejo. An evening breeze cools the temperature down along the coast.

The climate in the Azores is mild year-round.
In Madeira, the climate is mild, more or less constant year-round with high temperatures in the summer.

When to go
Spring and fall are definitely the best times of year to visit mainland Portugal. Peak season in Portugal extends from June to September.

The tourist season in the Algarve last from late February until November, and in the north from May until September.
In the winter Madeira is always very popular. Overall the wettest season is from November to March: the soggiest regions are in the extreme north and in the Serra da Estrela mountain region in the country's centre. The ski season is from January to March, but February is best.