Peak season from May to September is the best time to visit Niagara Falls. Enjoying mild weather and engaging in activities like boat rides, Mistrider Zipline and Journey Behind the Falls will take you to deal with high prices and swarms of tourists. By October hotel prices begin to drop. Moreover, autumn at the Niagara Falls signifies grape harvest so how could you say 'no' to a glass of local wine? A snowy and desolate period between December and March is freezing, but also economical as you can get great deals, with limited attractions though. Furthermore, we bet you've never witnessed the Winter Festival of Lights standing by giant frozen waterfalls. The snowfall often continues into April, so early spring is not the warmest time for a trip. Late April and May will see most of the attractions reopen.