Beaver Island, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Beaver Island is known for its natural beauty, outdoor recreational activities, and rich Irish-American heritage. The best time to travel to Beaver Island is during the summer months of June to August, when the average air temperature is around 70°F (21°C) and the water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!