Pen Guen in Saint-Cast is situated on the northeastern coast of Brittany, France, facing a northeastern-facing bay with protected waters. The spot comprises a sandy beach backed by residential development, agricultural land, and forested areas. The bay configuration provides some protection from Atlantic swells, though conditions remain choppy. The shallow sandy bottom visible in satellite imagery suggests gradual depth progression suitable for beginners. Wind reliability is notably low at 19.7%, indicating this spot is weather-dependent and requires patience for suitable conditions. Northwest winds (315°) provide optimal side-shore conditions for safe launch and progression. Wave heights average 0.68m, making this suitable for riders focusing on freestyle and light wave riding rather than swell-dependent maneuvers. The spot suits beginners and early-intermediate kiters due to manageable water depths and protected bay conditions. Kiters should be aware of shallow areas, respect residential proximity, and exercise caution during choppy water periods. Water temperature averaging 12.7°C requires appropriate thermal protection year-round.