Asuncion, Paraguay offers 1 beach perfect for sunbathing, surfing, swimming, and more. Asuncion, Asuncion is known for its historic landmarks such as the Palacio de los Lopez and the National Pantheon of the Heroes. The best time to travel to Asuncion, Paraguay, is from May to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures near 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!