Puerto San Carlos, Mexico offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Puerto San Carlos is known for Magdalena Bay, a prime location for whale watching and ecotourism. The best time to travel to Puerto San Carlos, Mexico, is from November to April, with average air temperatures around 70-80°F (21-27°C) and water temperatures ranging from 68-75°F (20-24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!