Olbia, Italy offers 47 beaches perfect for sunbathing, surfing, swimming, and more. Olbia is known for its proximity to the Costa Smeralda, Porto Rotondo, and the archaeological site of Nuraghe Riu Mulinu. The best time to travel to Olbia, Italy, is from May to September, with average air temperatures ranging from 70°F to 85°F and water temperatures from 68°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!