Cap Bon Ami, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Cap Bon Ami, Quebec, Canada, is known for its stunning views of the Gulf of St. Lawrence and the iconic cliffs of Forillon National Park. The best time to travel to Cap Bon Ami, Canada, is during the summer months of June to August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!