Gréve de Yelen is a sheltered bay located on the Breton coast of northwestern France. The bay opens toward the northeast, protected by rocky headlands and a curved shoreline that creates a natural basin. This is a shallow, enclosed water body with sandy-muddy bottom characteristics typical of Breton estuaries. The spot is moderately developed with residential properties and farming areas immediately inland. Best conditions occur with northwesterly winds (315°), which provide side-shore conditions parallel to the main beach access. The bay's limited fetch and shallow depths make it suitable primarily for beginners and intermediate kiters seeking protected conditions. Wind reliability is relatively low at 22.5%, and average wind strength of 9 knots is marginal for consistent kitesurfing. Wave heights average 0.82m, indicating small, rolling conditions rather than dynamic swell. Kiters should note the presence of shallow areas, rocky features, and the narrow bay entrance which can concentrate wind and current. Water temperature averages 13°C, requiring appropriate thermal protection year-round. This spot is best suited for practice and progression in light wind conditions rather than advanced sessions.