Mers-les-Bains is a small bay-style kitesurfing spot located on the Picardy coast of northern France, facing northeast into the English Channel. The spot features a pebbly beach backed by residential development and a sheltered bay configuration with reduced fetch. The presence of harbor infrastructure and boat traffic areas is evident in the satellite imagery, indicating moderate commercial activity. Wind conditions are weak and unreliable, averaging only 8.2 knots with 16.5% reliability, making this spot marginal for consistent kitesurfing. Average wave heights of 0.83m reflect the bay's protected nature. Best conditions occur with northwesterly winds providing side-shore conditions. This spot suits beginners and intermediates seeking calm, protected water with minimal wave power. However, kiters should be aware of the shallow bay dynamics, potential boat traffic, and limited wind availability. The rough-chop water texture suggests variable conditions even during moderate wind events. Winter months may offer slightly better wind consistency. The developed shoreline limits space for launching and recovery in certain areas.