Port Rowan, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Port Rowan, Ontario, Canada, is known for Long Point Provincial Park and the Long Point Biosphere Reserve. The best time to travel to Port Rowan, Canada, is during the summer months of June to August, when the average air temperature is around 20-25°C (68-77°F) and the water temperature in Lake Erie is approximately 20-23°C (68-73°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!