The weather in Portugal is the product of a Mediterranean climate, tempered by the influence of the Atlantic Ocean. Winters are mild and summer sunshine is plentiful.
If you're moving to the central parts of the mainland, you may experience slightly cooler temperatures due to elevation. Otherwise, the mercury usually sits at around 78°F (25°C) in summer and 61°F (16°C) in winter.
Rainfall in Portugal is mostly present during winter, but heavy periods of precipitation can occur in autumn, particularly in the north of the country.
Portugal's Algarve region, a favourite expat destination, has by far the best weather in the country. This pensioners' playground is the sunniest, driest, and warmest part of the nation, yet temperatures are never uncomfortably hot.