Spain's Geography: Land Area & Iberian Peninsula Facts

Spain occupies 505,990 square kilometers on the Iberian Peninsula, making it the fourth-largest country in Europe by area. The peninsula itself spans 583,254 square kilometers, with Portugal controlling the western portion and Spain holding approximately 87 percent of the landmass. The Mediterranean Sea borders Spain's eastern and southeastern coasts for 1,660 kilometers. The Atlantic Ocean meets the northern coast along the Bay of Biscay for 710 kilometers and the southern coast from the Portuguese border to the Strait of Gibraltar. The strait separates Spain from North Africa by 14 kilometers at its narrowest point, linking the Atlantic to the Mediterranean through a channel ranging from 14 to 44 kilometers wide.

The Meseta Central dominates the interior, a high plateau averaging 610 meters elevation that covers approximately 400,000 square kilometers across the center of the peninsula. This plateau tilts westward, with most of its rivers draining toward the Atlantic. The Tagus River runs 1,007 kilometers from the Sistema Ibérico mountains through the southern Meseta to the Atlantic, making it the longest river on the peninsula. The Ebro River follows a distinct course, rising in the Cantabrian Mountains and flowing 930 kilometers southeast through the Ebro Basin before reaching the Mediterranean near Tarragona. The Guadalquivir runs 657 kilometers from the Sierra de Cazorla through Andalusia to the Atlantic at Sanlúcar de Barrameda, draining a basin of 57,071 square kilometers.

Mountain ranges frame the Meseta on nearly all sides. The Pyrenees form the northeastern border, extending 430 kilometers from the Bay of Biscay to the Mediterranean with peaks exceeding 3,000 meters for much of their length. Aneto reaches 3,404 meters in the central Pyrenees, the highest point in the range. The Cantabrian Mountains parallel the northern coast for 480 kilometers, separating the Atlantic maritime climate from the continental interior. Peaks in the Picos de Europa section exceed 2,600 meters, with Torre de Cerredo reaching 2,650 meters. The Sistema Ibérico runs 500 kilometers along the eastern edge of the Meseta, marking the watershed between Atlantic and Mediterranean drainage. The Sistema Central divides the Meseta into northern and southern plateaus, extending 600 kilometers from the Portuguese border northeast toward the Sistema Ibérico with peaks reaching 2,592 meters at Pico Almanzor.

The Sierra Nevada rises in southeastern Andalusia, containing peninsular Spain's highest elevations. Mulhacén reaches 3,479 meters, the highest point on the Iberian Peninsula and the highest point in Spain outside the Canary Islands. Veleta stands at 3,396 meters six kilometers to the northwest. Fifteen peaks in the Sierra Nevada exceed 3,000 meters elevation. The range extends 81 kilometers from southwest to northeast and spans 15 to 30 kilometers in width, covering approximately 2,000 square kilometers. Glacial cirques mark elevations above 2,500 meters, remnants of Pleistocene glaciation that carved the current topography.

Spain includes two archipelagos totaling 11,313 square kilometers. The Balearic Islands sit in the western Mediterranean 80 to 300 kilometers from the eastern coast, comprising four major islands and several smaller ones across 4,992 square kilometers. Mallorca covers 3,640 square kilometers, Menorca 695 square kilometers, Ibiza 572 square kilometers, and Formentera 83 square kilometers. The Canary Islands lie in the Atlantic Ocean 100 kilometers west of Morocco and 1,400 kilometers southwest of the Iberian Peninsula. Seven major islands and several smaller ones total 7,493 square kilometers. Tenerife covers 2,034 square kilometers and contains Teide, a volcanic peak reaching 3,718 meters and the highest point in Spain. Fuerteventura spans 1,660 square kilometers, Gran Canaria 1,560 square kilometers, Lanzarote 846 square kilometers, La Palma 708 square kilometers, La Gomera 370 square kilometers, and El Hierro 269 square kilometers.

Coastline character varies by exposure and geology. The Costa Brava extends 214 kilometers along the northeastern Mediterranean coast from Blanes to the border, characterized by rocky cliffs, pine-covered headlands, and small coves cut into metamorphic and igneous bedrock. The Costa del Sol runs 150 kilometers along the southern Mediterranean coast in Andalusia from Nerja to Manilva, featuring sandy beaches backed by the Cordillera Penibética mountains that rise directly from the coastal plain. The Bay of Biscay coast in the north shows steep cliffs and narrow beaches where the Cantabrian Mountains meet the Atlantic, with rias—drowned river valleys similar to fjords but formed without glaciation—cutting inland along the Galician coast.

Climate divides into distinct zones controlled by latitude, proximity to water, and elevation. The northern Atlantic coast receives 1,200 to 1,600 millimeters of precipitation annually, distributed throughout the year with no dry season. The Mediterranean coast and interior receive 300 to 600 millimeters annually, concentrated in spring and autumn with summer drought lasting three to five months. The Meseta experiences continental conditions with January mean temperatures between 3 and 6 degrees Celsius and July means between 21 and 24 degrees Celsius. Coastal areas show moderated ranges, with Barcelona recording January means of 9 degrees and July means of 24 degrees. The Canary Islands maintain subtropical conditions with minimal seasonal variation, averaging 18 to 21 degrees in winter and 24 to 26 degrees in summer.

Elevation creates climate variation independent of latitude. Madrid sits at 667 meters on the southern Meseta, recording January means of 6 degrees and July means of 25 degrees with 436 millimeters of annual precipitation. Ávila at 1,132 meters on the northern Meseta shows January means of 3 degrees and July means of 19 degrees with 364 millimeters annually. The Pyrenees and Sierra Nevada carry alpine conditions above 2,500 meters with precipitation exceeding 2,000 millimeters annually, much falling as snow from November through May. Snow cover persists year-round above 3,200 meters in the Sierra Nevada on north-facing slopes.

Drainage patterns reflect the interior plateau's tilt and the location of mountain ranges. The Tagus, Duero, and Guadiana rivers all rise in mountains east or south of the Meseta and flow west to the Atlantic, draining 69 percent of the peninsula's area to that ocean. Only the Ebro among major rivers drains to the Mediterranean, along with shorter coastal streams in Catalonia, Valencia, Murcia, and Andalusia. The Guadalquivir drains to the Atlantic through the Gulf of Cádiz, fed by tributaries from the Sierra Nevada and Sierra Morena. River flow varies seasonally, with maximum discharge in spring from snowmelt and rainfall, minimum discharge in late summer. The Ebro at Tortosa shows mean annual discharge of 426 cubic meters per second with historical maximums exceeding 4,000 cubic meters per second during floods.

Geology underlies the topographic pattern. The Meseta consists of Paleozoic metamorphic and igneous rocks from the Variscan orogeny, formed 380 to 280 million years ago when the ancient continents of Gondwana and Laurussia collided. These crystalline rocks were peneplained by erosion then uplifted and fractured during the Alpine orogeny beginning 65 million years ago. The Sistema Central and other ranges crossing the Meseta represent uplifted blocks along these fractures. The Pyrenees formed from collision between the Iberian microplate and Eurasia during the Alpine orogeny, with marine sediments compressed and thrust upward between 50 and 30 million years ago. The Cordillera Bética in the south, including the Sierra Nevada, formed from similar collision processes affecting Africa and Iberia.

Sedimentary basins flank the uplifted zones. The Ebro Basin contains up to 4,000 meters of sediment deposited over 40 million years as erosion stripped the surrounding Pyrenees and Sistema Ibérico. The Guadalquivir Basin accumulated sediments eroded from the Cordillera Bética and Sierra Morena. These basins contain the most productive agricultural soils in the country. The Canary Islands represent a different geological origin, formed by volcanic activity associated with a mantle hotspot rather than plate collision. Teide last erupted in 1909. Lanzarote experienced eruptions from 1730 to 1736 that covered a quarter of the island with lava. El Hierro recorded submarine eruptions as recently as 2011.

Vegetation follows climate and elevation gradients. The northern Atlantic coast supports deciduous and mixed forests where annual precipitation exceeds 1,000 millimeters, dominated by oak, beech, and chestnut below 1,200 meters. Mediterranean evergreen forests cover areas with 400 to 800 millimeters of precipitation, dominated by holm oak and cork oak with understory shrubs adapted to summer drought. Areas receiving less than 400 millimeters support grassland and shrubland vegetation types. The southeastern coast and interior valleys show semi-arid vegetation including esparto grass and shrubs where precipitation falls below 300 millimeters. Alpine meadows appear above treeline at 1,800 to 2,200 meters depending on latitude and exposure.

Human modification has altered vegetation over millennia. Forest cover has declined from an estimated 90 percent of the peninsula in prehistoric times to approximately 37 percent today. Deforestation accelerated during periods of agricultural expansion, shipbuilding demand, and charcoal production. The Meseta was largely cleared for cereal cultivation and sheep grazing by the medieval period. Irrigation agriculture extends across 3.8 million hectares, concentrated in the Ebro valley, the Guadalquivir valley, the Valencian coast, and Murcia. Reservoirs store water from seasonal river flow, with 1,200 large dams providing 56,000 million cubic meters of storage capacity.

Doñana National Park protects 54,252 hectares of marshland, dunes, and Mediterranean scrubland where the Guadalquivir meets the Atlantic. The park serves as wintering habitat for over 500,000 waterfowl annually from northern Europe. Picos de Europa National Park covers 67,455 hectares of limestone karst terrain in the Cantabrian Mountains, with elevations ranging from 75 meters at the Cares River gorge to 2,650 meters at Torre de Cerredo. Ordesa y Monte Perdido National Park encompasses 15,608 hectares in the central Pyrenees, centered on Monte Perdido at 3,355 meters and the Ordesa Valley carved 1,000 meters deep by glacial and fluvial erosion. Teide National Park on Tenerife protects 18,990 hectares of volcanic landscape surrounding Teide at elevations from 2,000 to 3,718 meters. Sierra Nevada National Park covers 85,883 hectares including Mulhacén and 20 other peaks exceeding 3,000 meters, protecting the southernmost alpine and subalpine ecosystems in Europe.

Land use reflects climate and topography. Cultivated land covers 24.9 million hectares or 49 percent of the total area. Permanent pasture occupies 8.2 million hectares or 16 percent. Forests and woodland cover 18.6 million hectares or 37 percent. Urban and infrastructure areas account for 1.4 million hectares or 3 percent. Cereal cultivation dominates the Meseta, with wheat, barley, and oats grown across 6.4 million hectares. Olive groves cover 2.6 million hectares, concentrated in Andalusia, Castilla-La Mancha, and Extremadura. Vineyards occupy 967,000 hectares distributed across multiple regions, making Spain the most extensively planted wine country by area. Citrus cultivation covers 290,000 hectares along the Mediterranean coast in Valencia, Murcia, and Andalusia.

The Strait of Gibraltar creates a biogeographic transition zone between Mediterranean and Atlantic marine systems and between European and African terrestrial systems. Wind patterns through the strait drive upwelling that supports productive marine ecosystems. Surface water flows eastward from the Atlantic into the Mediterranean at approximately 1 meter per second, while denser Mediterranean water flows westward at depth. This two-layer circulation system exchanges 1.75 million cubic meters per second between the two basins. The Alboran Sea immediately east of the strait reaches depths of 2,000 meters within 50 kilometers of the coast. Submarine canyons cut into the continental shelf off the Mediterranean coast, with the Almería Canyon descending to 2,200 meters within 15 kilometers of shore.