Los Alcazares, Spain offers 15 beaches perfect for sunbathing, surfing, swimming, and more. Los Alcazares is known for the Mar Menor, a large coastal saltwater lagoon. The best time to travel to Los Alcazares, Spain, is from May to September, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 22-26°C (72-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!