Giglio Castello, Italy offers 1 beach perfect for sunbathing, surfing, swimming, and more. Giglio Castello is known for its historic Rocca Aldobrandesca fortress and charming medieval village atmosphere. The best time to travel to Giglio Castello, Italy, is from May to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!