Cayo Boca de Alonso, Cuba offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cayo Boca de Alonso is known for its pristine beaches and vibrant marine life, making it a popular destination for snorkeling and diving enthusiasts. The best time to travel to Cayo Boca de Alonso, Cuba, is from December to April, with average air temperatures around 77-82°F (25-28°C) and water temperatures about 77-79°F (25-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!