Area E Moresby Island, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Area E Moresby Island, British Columbia, Canada, is known for Gwaii Haanas National Park Reserve and Haida Heritage Site. The best time to travel to Moresby Island, Canada, is during the summer months of June to August, when the average air temperature is around 15-18°C (59-64°F) and the water temperature is approximately 10-12°C (50-54°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!