Nuevo Mariel, Cuba offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nuevo Mariel is known for the Mariel Special Development Zone, a major economic and trade hub in Cuba. The best time to travel to Nuevo Mariel, 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!