Castillo de Jagua, Cuba offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Cienfuegos is known for its historic Castillo de Jagua, a fortress that guards the entrance to Cienfuegos Bay. The best time to travel to Castillo de Jagua, Cuba, is from December to April, with average air temperatures around 75-85°F (24-29°C) and water temperatures near 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!