San Blas, Mexico offers 5 beaches perfect for sunbathing, surfing, swimming, and more. San Blas is known for the historic Fort of San Basilio, the Church of Our Lady of the Rosary, and the nearby La Tovara National Park. The best time to travel to San Blas, Mexico, is from November to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 77-82°F (25-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!