Carolina, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Carolina is known for its beautiful beaches and proximity to the Luis Muñoz Marín International Airport. The best time to travel to Carolina, United States, is in the spring (April to June) when the average air temperature is around 70-80°F and the water temperature is approximately 65-75°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!