Waconia, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Waconia is known for its beautiful lakeside beaches and recreational water activities. The best time to travel to Waconia, United States, is during the summer months of June to August, when the average air temperature is around 70-80°F and the water temperature in Lake Waconia is approximately 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!