Grand Manan, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Grand Manan is known for its stunning coastal scenery and whale-watching opportunities. The best time to travel to Grand Manan, Canada, is from June to September, when the average air temperature ranges from 15°C to 20°C (59°F to 68°F) and the water temperature is around 10°C to 15°C (50°F to 59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!