Colonia Bergthal, Paraguay offers 1 beach perfect for sunbathing, surfing, swimming, and more. Colonia Bergthal is known for its Mennonite heritage and cultural sites in Caaguazu, Paraguay. The best time to travel to Colonia Bergthal, Paraguay, is from May to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures approximately 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!