San Cosme y Damian, Paraguay offers 1 beach perfect for sunbathing, surfing, swimming, and more. San Cosme y Damian is known for the Jesuit Missions of La Santisima Trinidad de Parana and Jesus de Tavarangue, which are UNESCO World Heritage Sites. The best time to travel to San Cosme y Damian, Paraguay, is from May to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures around 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!