Colonia Estrella, Uruguay offers 1 beach perfect for sunbathing, surfing, swimming, and more. Colonia Estrella, Departamento de Colonia, Uruguay, is known for its picturesque vineyards and wine tourism. The best time to travel to Colonia Estrella, Uruguay, is from November to March, with average air temperatures around 75°F (24°C) and water temperatures near 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!