Trecesson, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Trecesson is known for the historic Trecesson Castle, a popular tourist attraction in Quebec, Canada. The best time to travel to Trecesson, Canada, is in July when the average air temperature is around 70°F (21°C) and the water temperature is approximately 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!