It was feared that as many as 20 more were missing in the ravages.
In Italy, rescuers recovered his body from the sea through the Ligurian province of Imperia.
Five other bodies, all men, were found in the sea on Sunday near Sanremo, on the beach in the Italian border town of Ventimiglia and along the coast of Imperia.
The identity of the last victims and the circumstances of their disappearance were not known.
The floods devastated mountainous areas in France’s southeastern region of Alpes-Maritimes and in Italy’s northwestern regions of Liguria and Piedmont, after a storm swept through both countries on Friday and Saturday.
In France, firefighters in the Alpes-Maritimes region were still looking for at least eight missing people on Monday, who witnesses described as being able to be washed away by flood waters.
Among them, two firefighters whose vehicle fell into the water when the road collapsed.
In addition, French rescuers are seeking to locate 12 other people whose families have not heard from them since the storm, which blocked roads and cut communications.
French rescuers on Sunday found the body of a man whose car had been swept away by a torrent in Saint-Martin-Vesubie, one of the hardest hit villages, where several houses and a bridge were destroyed by the raging water.
Authorities also found the body of a shepherd who had disappeared in the mountains between France and Italy.
A firefighter also died last week in the Valle d’Aosta border region.
The floods have put additional stress on regions facing the coronavirus pandemic.
The governors of Liguria and Piedmont have asked the Italian government for emergency aid.
Floods in Italy have often turned into emergencies in recent years due to lack of routine maintenance in cleaning rivers and waterways due to budget cuts.
Italian Finance Minister Roberto Gualtieri told state television RAI that recovery funds for the economic damage caused by the pandemic should also go to the environment, adding that “there will be additional investments” .