The best months to visit Niagara Falls depend on whether you prioritize activities, weather, or avoiding crowds. For the full experience with all attractions open—including the iconic boat tours like Maid of the Mist or Niagara City Cruises—the summer months of June, July, and August are peak season. During this time, the weather is warm (averaging 25°C/77°F), and the falls are at their most powerful, but expect large crowds and higher hotel prices. If you prefer a balance of pleasant weather and fewer tourists, late May or September to early October are ideal. September, in particular, offers the beautiful transition into autumn foliage along the Niagara Parkway and coincides with local wine festivals. For those on a strict budget who don't mind the cold, January and February are the cheapest months. While the boat tours are closed for winter, the falls transform into a stunning "ice kingdom," and the Festival of Lights provides a magical evening atmosphere with millions of twinkling displays.