Siboney, Cuba offers 1 beach perfect for sunbathing, surfing, swimming, and more. Siboney, Santiago, Cuba, is known for Siboney Beach and its historical significance related to the Cuban Revolution. The best time to travel to Siboney, Cuba, is from December to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures about 77-82°F (25-28°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!