The number of daily coronavirus infections came in at 18,746 in France on Wednesday, health authorities reported, a record since widespread testing began.
The rate of positive test results rose to 9.1 percent from around 4.5 percent a month ago.
“The virus has been spreading faster in recent weeks,” President Emmanuel Macron said late Wednesday.
“In places where it is spreading too fast, especially where it is spreading among the elderly who are most at risk, and where there are more and more intensive care beds being occupied, we must proceed to more restrictions,” he said on French TV.
He said new measures would be similar to protocols put in place in and around the capital, as well as the region around Marseille in the south.
“We are not in a normal situation, and we won’t be for several months,” Macron said.
Health Minister Olivier Veran is set to hold a news briefing on the virus situation later Thursday.
Last week, Veran singled out five large cities — Lille, Lyon, Grenoble, Saint-Etienne and Toulouse — as possibly requiring more restrictions, saying their health situations were “very worrying”.