Musquodoboit Harbour, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Musquodoboit Harbour is known for Martinique Beach, the longest sandy beach in Nova Scotia. The best time to travel to Musquodoboit Harbour, Canada, is from June to September, when the average air temperature is around 15-20°C (59-68°F) and the water temperature is approximately 12-18°C (54-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!