Ano Syros, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Ano Syros is known for its medieval architecture, narrow alleys, and the Catholic Cathedral of Saint George. The best time to travel to Ano Syros, Greece, is from May to September, with average air temperatures ranging from 75°F to 85°F and water temperatures from 70°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!