Valle Gran Rey, Spain offers 12 beaches perfect for sunbathing, surfing, swimming, and more. Valle Gran Rey is known for its stunning black sand beaches and tranquil atmosphere. The best time to travel to Valle Gran Rey, Spain, is from May to October, with average air temperatures around 75°F (24°C) and water temperatures around 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!