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Climate & Weather Guide in Portugal

Climate zones, seasonal temperatures, rainfall patterns, and best travel times

Portugal has a mostly Mediterranean climate, shaped by strong Atlantic influence along the coast and drier, hotter conditions inland. The north is cooler and wetter, the south is warmer and generally drier, while the interior can experience very hot summer days and colder winter nights. National climate references place Portugal in the 1991-2020 observed climatology, with a mix of Mediterranean and oceanic influences across its territory. For residents and expats, this means long sunny summers, mild winters in many coastal areas, and noticeable regional differences in rainfall and temperature.

Summer Average

25-35°C

Winter Average

5-15°C

Climate Types

Mediterranean and Oceanic and Continental

Annual Rainfall

500-1600 mm

Sunshine Hours

2,500-3,000 hrs/yr

Average Humidity

60-75%

Regional Climate Variations

North Atlantic Coast and Minho

This is Portugal’s wettest and most ocean-influenced region, with a temperate feel, frequent winter rain, and relatively mild summers. It includes cities such as Porto and Braga, where green landscapes and cloudier skies are common compared with the rest of the country. The climate is best suited to people who prefer less summer heat and do not mind regular rainfall. Köppen patterns here are mainly oceanic with Mediterranean influence, especially in coastal and lowland areas.

Summer:22-27°C
Winter:8-14°C
High rainfall

Mild, green, and rainier than the rest of Portugal, with comfortable summers and damp winters.

Central Interior and Alentejo

The interior of central Portugal and much of Alentejo has the strongest continental influence, with hotter summers, cooler winter nights, and larger temperature swings than the coast. Rainfall is lower and more seasonal, and summer drought is a major feature of the landscape. This region is attractive for those who like dry heat, bright skies, and quieter rural settings, but it is less comfortable for people sensitive to extreme summer temperatures. Köppen climates are mainly hot-summer Mediterranean with local semi-arid tendencies in the driest areas.

Summer:28-38°C
Winter:5-12°C
Low to moderate rainfall

Hot, dry, and strongly seasonal, with very warm summers and crisp winter mornings inland.

Lisbon Coast and Setúbal Peninsula

The Lisbon metropolitan coast has one of Portugal’s most balanced climates for expats, combining mild winters, warm but usually manageable summers, and relatively modest rainfall. The Atlantic helps reduce temperature extremes, though heat waves can still occur in summer. Köppen classification is typically Mediterranean, with warm-dry summers and mild, wetter winters. This is a practical choice for residents who want city amenities, coastal access, and year-round livability without the harsher rain of the north or the extreme inland heat.

Summer:24-31°C
Winter:10-15°C
Low to moderate rainfall

Bright, coastal, and relatively mild, with a long sunny season and comfortable winters.

Algarve and Southern Coast

The Algarve is Portugal’s warmest and driest major region, with very sunny conditions, mild winters, and a long tourism-friendly warm season. Sea breezes keep the coast more comfortable than the inland valleys, but summer heat can still be strong. Köppen climate here is mostly hot-summer Mediterranean, with some locations approaching semi-arid conditions. This region is especially appealing to residents and expats seeking outdoor living, beach access, and the highest reliability of dry, sunny weather in Portugal.

Summer:26-34°C
Winter:11-16°C
Low rainfall

Very sunny, warm, and dry, with short mild winters and a long, beach-friendly summer season.

Portugal offers a mostly Mediterranean climate with strong regional contrasts: wetter, cooler conditions in the north, hot and dry summers in the interior, and mild, sunny weather along much of the coast. For residents and expats, the most comfortable all-round areas are typically the Lisbon coast and the Algarve, while the north suits those who prefer greener landscapes and less heat.