Ostrea Lake, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Ostrea Lake, Nova Scotia, Canada, is known for its proximity to the scenic Eastern Shore and the nearby attractions of Martinique Beach and the Musquodoboit Trailway. The best time to travel to Ostrea 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 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!