Lopez Island, United States offers 41 beaches perfect for sunbathing, surfing, swimming, and more. Lopez Island is known for Spencer Spit State Park and the Lopez Island Historical Museum. The best time to visit Lopez Island is from June to September, with average air temperatures around 60-70°F and water temperatures around 50-55°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!