Mercuri, Italy offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mercuri, Sardinia, Italy, is known for its proximity to the stunning beaches of the Costa Smeralda and the archaeological site of Nuraghe La Prisgiona. The best time to travel to Mercuri, Italy, is during late spring or early fall when the average air temperature is around 70°F (21°C) and the water temperature is approximately 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!