An inflatable boat with 63 people overturned on the beach between Wimereux and Ambleteuse in the morning, according to the France Bleu radio station.
The migrants were rescued and brought to a shelter near Lens. They were all in good health and did not require hospitalization.
Another migrant boat towed by a fishing vessel was reportedly spotted and stopped by the maritime control and rescue center near Boulogne in the afternoon. There were 23 people on board.
Nearly 5,000 migrants have crossed the Channel into Britain so far in 2020, with 1,800 migrants arriving in the country using the Channel in 2019.