Peniscola, Spain offers 15 beaches perfect for sunbathing, surfing, swimming, and more. Peniscola is known for the Peniscola Castle, which was featured in the TV series "Game of Thrones." The best time to travel to Peniscola, Spain, is from May to September, with average air temperatures ranging from 20°C to 30°C (68°F to 86°F) and water temperatures between 20°C and 25°C (68°F to 77°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!