Windermere, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Windermere, British Columbia, Canada, is known for Lake Windermere and the nearby Kootenay National Park. The best time to travel to Windermere, Canada, is in July, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!