Rouen sits in western France under an oceanic climate, with rain distributed fairly evenly across the year and driven mainly by Atlantic weather systems, particularly the autumn and winter storm season.
Built along the Seine’s lower reaches, the city tracks the river’s slow but significant rises during prolonged wet periods. While flooding here is usually a slower, river-driven process compared to the intense storms of southern France, an unusually strong Atlantic depression can still bring damaging short-term rainfall, and Meteo-France’s radar network helps track these systems as they move onshore. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map