Laguna de Duero, Spain offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Laguna de Duero is known for its proximity to the historic city of Valladolid and the annual Fiesta de la Virgen del Villar. The best time to travel to Laguna de Duero, Spain, is during late spring (May to June) when the average air temperature is around 20-25°C (68-77°F) and water temperature is approximately 18-20°C (64-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!