Cap aux Oies, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cap aux Oies, Quebec, Canada, is known for its proximity to the Charlevoix Biosphere Reserve and the scenic views of the St. Lawrence River. The best time to travel to Cap aux Oies, Canada, is from June to August, 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!