Petrosino, Italy offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Petrosino is known for its proximity to the Marsala wine region and the beautiful beaches along the western coast of Sicily. The best time to travel to Petrosino, Italy, is from May to September, with average air temperatures ranging from 70°F to 85°F and water temperatures from 70°F to 80°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!