"France has the situation under control but it is precarious with a surge of virus circulation this summer. The short term future of the pandemic mainly lies in the hands of the population," the scientific committee on the disease said in a statement published by the Health Ministry's website.
"It is highly likely that we will experience a second epidemic wave this autumn or winter," the statement added.
France has been seeing an uptick in coronavirus infections and hundreds of new clusters in recent weeks, notably as young people gather at cafés or parties and families meet up for summer vacation.
The country has reported 7,000 new cases in the last week, after bringing the virus nearly under control with a strict two-month nationwide lockdown that ran from March 17 to May 11.
On Monday, rules on wearing masks outdoors took effect in the hardest-hit areas, the latest move to tighten coronavirus restrictions after a nationwide decree last month required people to wear masks in all indoor public places.
French officials have confirmed 30,265 virus-related deaths since the pandemic began, one of Europe's highest death tolls.