Llano Bonito, Panama offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Llano Bonito, Herrera Province, Panama, is known for its proximity to the Sarigua National Park. The best time to travel to Llano Bonito, Panama, is during the dry season from December to April, with average air temperatures around 80°F (27°C) and water temperatures near 82°F (28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!