Praia da Luz, Portugal offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Praia da Luz is known for its beautiful sandy beaches and the historic Luz Fortress. The best time to travel to Praia da Luz, Portugal, is from May to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!