While Haileybury is a year-round destination, the best time to visit for most travelers is during the summer months, from June to August, or in the early fall, specifically September.Summer in Haileybury offers the warmest weather, with average temperatures in the low to mid-20s Celsius (70s Fahrenheit), making it ideal for outdoor activities on Lake Temiskaming. Travelers looking for boating, fishing, or simply enjoying the waterfront will find these months perfect. The Haileybury Waterfront is particularly active during this period, with opportunities for strolls along the boardwalk and enjoying views of the lake.For couples or solo travelers who appreciate cooler temperatures and stunning natural beauty, September is an excellent choice. The autumn foliage around Lake Temiskaming is spectacular, with trees displaying vibrant reds, oranges, and yellows.