Deer Lake, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Deer Lake, Newfoundland and Labrador, Canada, is known for its proximity to Gros Morne National Park, a UNESCO World Heritage Site. The best time to travel to Deer Lake, Canada, is during the summer months of June to August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!