Oneida, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Oneida, Tennessee, United States, is known for the Big South Fork National River and Recreation Area. The best time to travel to Oneida, United States, is in late spring (May to June) when the average air temperature is around 60-70°F and the water temperature in nearby lakes is approximately 55-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!