Lac Etchemin, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Lac Etchemin is known for its picturesque lake and outdoor recreational activities. The best time to travel to Lac Etchemin, 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 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!