The best time to visit Les Bergeronnes for whale watching is from June to September, when various species are most abundant in the St. Lawrence Estuary.During these months, the weather is generally warm and pleasant, making it ideal for boat excursions and other outdoor activities. July and August are peak season, offering the highest chances of seeing multiple whale species, including humpbacks, fin whales, and minke whales. These months are also popular for kayaking and zodiac tours, getting you closer to the water.If you prefer a quieter experience with fewer crowds, early June or mid-September can be an excellent choice. While the weather might be a bit cooler, you'll still have good opportunities for whale sightings, and the autumnal colours starting in September add to the scenic beauty of the region.