Rojo Cabo, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Rojo Cabo, Puerto Rico, United States, is known for the Cabo Rojo Lighthouse and the stunning Playa Sucia. The best time to travel to Cabo Rojo, United States, is from December to April, with average air temperatures around 75-85°F and water temperatures approximately 77-82°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!