When to see high tides in France?. When do spring tides occur? The daily movement of the tides is due to the attraction of the moon and the sun on the oceans.
During new and full moons and when this syzygy occurs, the tides are extremely strong. In France, the most interesting spot on the coast thanks to its large tidal range is the bay of Mont Saint-Michel. The tidal range can reach 15 meters and the sea can retreat up to 15 kilometers. Residents of these coastal regions keep informed about periods of high tides and adapt their activities.