Nanterre sits in the Paris metropolitan region along the Seine river basin, where a temperate oceanic climate keeps rainfall fairly moderate and evenly spread across the year.
West of Paris near the Seine, the city monitors the river’s level alongside its Paris-region neighbors. The Seine’s slow, gradual response to rainfall means river flooding here typically develops over days rather than hours, as seen in the major floods of 2016 and 2018, though intense summer storms can still cause rapid local street flooding. Learn more: Flash Flood Warning Signs on Radar · Open the full Rain Map