Gaviao, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Gaviao is known for its scenic river beaches and tranquil natural surroundings. The best time to travel to Gavião, Portugal, is during late spring (May to June) or early autumn (September), when the average air temperature ranges from 20°C to 25°C (68°F to 77°F) and the water temperature is around 18°C to 22°C (64°F to 72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!