Prime Minister Jean Castex introduced the measure on Friday night time after an emergency authorities well being safety assembly on the presidential palace, warning of a “nice threat” from the brand new variants.
All these arriving from different EU international locations shall be required to provide a damaging Covid-19 take a look at, he mentioned.
France can even shut all giant buying centres from Sunday and restrict journey to and from its abroad territories.
Mr Castex ordered elevated police checks of those that violate France’s 12-hour-a-day curfew, maintain secret events or reopen eating places in defiance of a closure order in place since October.
Virus infections, hospital admissions and deaths have been rising steadily however not sharply in latest weeks.
Many medical doctors have been urging a brand new nationwide shutdown like these imposed in a number of different European international locations.
Mr Castex mentioned the measures are an try and keep away from the financial value of a 3rd lockdown.
Citing the financial devastation of such measures, Mr Castex mentioned: “Our responsibility is to place all the pieces in place to keep away from a brand new lockdown, and the approaching days shall be decisive.
“Greater than ever we should always do all the pieces to respect the foundations.”