Indianapolis, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Indianapolis is known for hosting the Indianapolis 500, the largest single-day sporting event in the world. The best time to travel to Indianapolis is from May to September, with average air temperatures ranging from 60°F to 85°F and water temperatures around 70°F in nearby lakes. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!