Puerto de Conchilias, Uruguay offers 1 beach perfect for sunbathing, surfing, swimming, and more. Puerto de Conchilias, Departamento de Colonia, Uruguay, is known for its proximity to the historic town of Colonia del Sacramento, a UNESCO World Heritage Site. The best time to travel to Puerto de Conchilias, Uruguay, is from December to February, with average air temperatures around 75°F (24°C) and water temperatures near 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!