Amieira, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Amieira, Evora, Portugal, is known for the Amieira Marina, a popular destination for houseboat vacations on the Alqueva Lake. The best time to travel to Amieira, Portugal, is from May to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!