Plage du Sillon is a bay beach located near Saint-Malo in Brittany, France. The spot faces northeast into a shallow bay with moderate fetch from open Atlantic waters. The beach is a sheltered bay break with relatively small, choppy conditions typical of French Atlantic sites with significant tidal influence. The murky water suggests strong tidal action characteristic of the Bay of Mont-Saint-Michel region. Best conditions occur with northwest to north winds providing side-shore flow parallel to the beach. Wind reliability is low at 18.9%, making this an inconsistent spot that requires patience. Average wind speeds of 8.9 knots indicate light to moderate conditions. Water temperature averages 13.1°C, requiring thermal protection. The spot is suitable for beginners and progressing intermediates seeking sheltered, small-wave practice in a settled environment. Key considerations include tidal current changes, shallow depths requiring careful launch/landing, and monitoring weather windows. The proximity to residential areas means respecting local usage patterns and potential restrictions. Water conditions are choppy rather than organized, limiting progression for advanced riders.