Sao Luis, Portugal offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Doha is known for its modern architecture and cultural landmarks like the Museum of Islamic Art. The best time to travel to São Luís, Portugal, is during the summer months of June to August, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 20-23°C (68-73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!