Carcavelos, Portugal offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Carcavelos is known for its expansive sandy beach and excellent surfing conditions. The best time to travel to Carcavelos, Portugal, is from late spring to early autumn (May to September), when the average air temperature ranges from 20°C to 28°C (68°F to 82°F) and the water temperature is around 17°C to 21°C (63°F to 70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!