Mariquina, Chile offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mariquina, Los Rios, Chile, is known for the San Jose de la Mariquina Church and the nearby Cruces River Wetlands. The best time to travel to Mariquina, Chile, is during the summer months of December to February, when the average air temperature is around 68°F (20°C) and the water temperature is approximately 59°F (15°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!