Arroyo, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Arroyo is known for its historic lighthouse, Punta de las Figuras Light. The best time to travel to Arroyo, United States, is during the spring months of March to May, when the average air temperature is around 70°F (21°C) and water temperature is approximately 65°F (18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!