El Grao de Castellón, Spain offers 1 beach perfect for sunbathing, surfing, swimming, and more. El Grao de Castellón is known for its beautiful beaches and vibrant port area, making it a popular destination for beach tourism. The best time to travel to El Grao de Castellon, Spain, is from May to September, with average air temperatures around 25-30°C and water temperatures ranging from 22-26°C. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!