Isla Blanca, Mexico offers 1 beach perfect for sunbathing, surfing, swimming, and more. Isla Blanca is known for its pristine beaches and the nearby Chacmuchuch Lagoon. The best time to travel to Isla Blanca, Mexico, is from December to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 78-82°F (26-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!