Portugal Weather, climate and geography
Not surprisingly, considering its close proximity to northern Africa, Portugal is one of the warmest European countries with an average temperature of 15°C (55°F) in the north and 18°C (64°F) in the south, while the Azores and Madeira are wetter and hotter respectively off the coast. It can become rainy and windy during autumn and winter, but spring and summer see temperatures soar to as high as 40°C (104°F) around the interior and 35°C (95°F) in the north.
The northwest has mild winters with high levels of rainfall, and fairly short summers. The northeast experiences longer winters and hot summers. In the south, summers (May to October) are warm with very little rain except in early spring and autumn. Snow will fall in the north, but melts quickly.
Light- to mediumweights and rainwear are advised (Portugal has one of the highest rainfalls in Europe). In summer, wear very light fabrics, preferably linen, as temperatures can soar and prove very uncomfortable if you have packed wrongly. Should you travel in spring or autumn, pack a combination of both.