Las Cortinas, Spain offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Las Cortinas is known for the stunning landscapes of the Picos de Europa National Park. The best time to travel to Las Cortinas, Spain, is from May to September, with average air temperatures around 70-85°F (21-29°C) and water temperatures around 68-75°F (20-24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!