Quiaios, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Quiaios is known for its beautiful sandy beaches and tranquil coastal atmosphere. The best time to travel to Quiaios, Portugal, is from June 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 18°C to 21°C (64°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!