The best time to go to Sylvan Beach is during the summer months, from June to August, when the weather is warm and all attractions are fully operational.During this period, the average daily temperatures range from the mid-70s to low 80s Fahrenheit, making it ideal for enjoying the beach and outdoor activities. The Sylvan Beach Amusement Park is open daily, and many local events and festivals are scheduled, providing plenty of entertainment for families. The warm water of Oneida Lake is superb for swimming, boating, and fishing.For travelers looking for a slightly less crowded experience while still enjoying good weather, late May and early September are also excellent choices. The temperatures are still pleasant, generally in the 60s and 70s, and most businesses remain open, especially on weekends.