Grandes marées — coefficient 100

On September 13, 2026, the Opal Coast is set to witness a remarkable natural phenomenon - a tidal coefficient of 100, where the sea retreats far out and then rises quickly. This rare event creates a unique opportunity for seaside exploration and shore fishing, as the exposed tidal flats become accessible. Be sure to plan your visit around the low tide time and make your way back to safety before the waters rise again. It's a thrilling experience that showcases the power and beauty of nature.