Les Tres Cales, Spain offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Les Tres Cales is known for its beautiful beaches and proximity to the natural beauty of the Ebro Delta. The best time to travel to Les Tres Cales, Spain, is from June to September, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 72-77°F (22-25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!