Stella, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Stella, Puerto Rico, United States, is known for its proximity to the stunning beaches of Rincon and the vibrant surfing culture. The best time to travel to Stella, United States, is during late spring (May), when the average air temperature is around 70°F (21°C) and the 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!