Georgina, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Georgina, Ontario, Canada, is known for Lake Simcoe and the Georgina Pioneer Village & Archives. The best time to travel to Georgina, 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 Lake Simcoe 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!