Medano Amarillo, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Medano Amarillo, Baja California Sur, Mexico, is known for its proximity to the stunning Sierra de la Laguna Biosphere Reserve. The best time to travel to Medano Amarillo, Mexico, is from November to April, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!