A total of 367 migrants were brought back to the French ports of Calais, Dunkirk and Boulogne.
French coastguard Premar said French patrol boats had to make several trips to rescue people.
The sea route for migrants trying to reach the UK has become more used since checks at the train tunnel and the Calais ferry station have been increased.
So far this year, around 33,500 people have traveled across the English Channel in smaller boats, writes AFP.
A migrant can apply for asylum in the UK only when the person is on the country's territory.