Monte Argentario, Italy offers 12 beaches perfect for sunbathing, surfing, swimming, and more. Monte Argentario is known for its stunning coastal landscapes, the Orbetello Lagoon, and the luxurious Porto Ercole and Porto Santo Stefano. The best time to travel to Monte Argentario, 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!