Itri, Italy offers 1 beach perfect for sunbathing, surfing, swimming, and more. Itri is known for its historic Itri Castle and the annual Sagra della Castagna festival. The best time to travel to Itri, Italy, is from May to September, with average air temperatures ranging from 70°F to 85°F and water temperatures around 72°F to 79°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!