Cumming, United States offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Cumming is known for Lake Lanier, Sawnee Mountain Preserve, and the Cumming Fairgrounds. The best time to travel to Cumming, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the water temperature in nearby Lake Lanier is approximately 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!