General Climate in December
December in Portugal is characterized by a mild Mediterranean climate. Temperatures are significantly higher than in most of Europe during this period. Typically, nighttime lows reach about 8°C, while daytime temperatures range between 14°C and 18°C. In certain regions, such as the Algarve, you can still expect warm sunny days.
Temperature in Major Cities
In Lisbon, the country’s capital, the average temperature in December is around 15°C during the day and drops to 9°C at night. Porto, located in the north, is usually slightly cooler with temperatures ranging from 5°C to 14°C. In Faro, the main city of the Algarve region, days are often warmer, with temperatures reaching as high as 18°C.
Rainfall and Cloud Cover
December is one of the rainier months in Portugal. Rainy days occur quite regularly, with the average rainfall in the northern part of the country reaching up to 150 mm. Despite this, you can expect several sunny days throughout the month, especially in the south. Cloud cover is variable, but longer periods of rain are rare.
Sea and Marine Conditions
The Atlantic Ocean’s temperature in December ranges from 16°C to 18°C, which is rather cool for most to swim. However, for surfers and watersport enthusiasts, waves and conditions are often ideal. In the Algarve and other southern regions, marine conditions can still favor water activities, though caution should be taken with ocean currents.
Recommendations for Visitors
Travelers arriving in Portugal in December should equip themselves with a light jacket and an umbrella. Warm days may encourage outdoor strolls, but changing weather conditions require preparation for various scenarios. December is also the time when many cities are decorated for the holidays, offering a unique atmosphere for sightseeing and shopping.
Summary
Portugal in December offers a pleasant alternative to the wintery Europe. The mild climate, sporadic rain, and relatively high temperatures make it a good time for exploring. Although it isn’t beach season, the culture, cuisine, and festive atmosphere provide a significant attraction for any visitor.
