Alvega, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Alvega is not particularly known for travel and beach tourism. The best time to travel to Alvega, Portugal, is during late spring (May) or early autumn (September), when the average air temperature is around 20-25°C (68-77°F) and the water temperature in nearby rivers is approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!