Monaco City, France offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Monaco City is known for its luxurious casinos, the prestigious Monaco Grand Prix, and its stunning Mediterranean coastline. The best time to visit Monaco City is from May to September, with average air temperatures around 20-27°C (68-81°F) and water temperatures ranging from 20-24°C (68-75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!