This southern Ontario beach also features soft sand and a charming beach town, making it perfect for strolling through after a day of swimming. Sandbanks Provincial ParkDid you know this park has one of the best sandy beaches in Ontario? Point Pelee National ParkLocated at Point Pelee National Park, the southernmost point of mainland Canada, these beaches are situated on the shores of Lake Erie in Essex County. Long Point BeachThis beach is located at Long Point National Park, the fourth-oldest park in Ontario. The park features 1.5 kilometres of sandy beach in the middle of the lakeside community of Port Rowan.