South Stormont, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. South Stormont, Ontario, Canada, is known for the Lost Villages Museum and the Long Sault Parkway. The best time to travel to South Stormont, Canada, is during the summer months of June to August, when the average air temperature is around 70°F (21°C) and the water temperature in nearby bodies is approximately 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!