Simius, Italy offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Simius, Sardinia, Italy, is known for its stunning beaches like Spiaggia di Simius and the nearby Capo Carbonara Marine Protected Area. The best time to travel to Simius, Italy, is from May to September, with average air temperatures around 75°F (24°C) and water temperatures around 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!