Marinella, Italy offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Marinella is known for its beautiful beaches and proximity to the luxury resort area of Costa Smeralda. The best time to travel to Marinella, Italy, is from May to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!