Monterosso al Mare, Italy offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Monterosso al Mare is known for its beautiful beaches, the historic Church of San Giovanni Battista, and its proximity to the Cinque Terre National Park. The best time to travel to Monterosso al Mare, Italy, is from May to September, when the average air temperature is around 75°F (24°C) and the water temperature is approximately 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!