Buenos Aires, Mexico offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Buenos Aires, Baja California Sur, Mexico, is known for its beautiful beaches and vibrant marine life. The best time to travel to Buenos Aires is from March to May or September to November, with average air temperatures around 15-25°C (59-77°F) and water temperatures around 17-22°C (63-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!