Vague à Guy is a natural wave on the St. Lawrence River in Montreal, inside Parc des Rapides in LaSalle, where the rocky riverbed itself holds surfers and kayakers in place with no man-made structure involved. It's genuinely beginner-friendly and barely 30 feet from shore, with the city having stabilized and landscaped the nearby bank to keep access easy — best surfed somewhere around 6,000 to 9,000 m³/s. The site only runs seasonally, open May 1 through October 15, and the current stays strong and cold even when the wave itself looks tame. The city doesn't supervise the spot, so go with someone experienced or take an intro lesson before paddling out solo.