Saint Jean Baptiste, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Saint Jean Baptiste, Quebec, Canada, is known for the Fort Saint-Jean National Historic Site and the International Balloon Festival of Saint-Jean-sur-Richelieu. The best time to travel to Saint Jean Baptiste, Canada, is during the summer months of June to August, 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!