Riachuelo, Uruguay offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Riachuelo is known for its proximity to the historic city of Colonia del Sacramento, a UNESCO World Heritage Site. The best time to travel to Riachuelo, Uruguay, is from December to February, with average air temperatures around 25°C (77°F) and water temperatures near 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!