The caseload stands at 2,008,068 as the death toll rises to 29,309
"The peak is not yet here, this peak of infections will probably be for end-July," Delfraissy told RTL radio.
"Then the BA.5 variant will reappear, if it is not overtaken by another variant ...in autumn," he added.
France reported new 124,724 coronavirus infections over the past 24 hours, against 77,967 a week ago.
The French government also recommended this week that people should start wearing face masks again in crowded areas, especially in public transport, to counter the latest surge in COVID cases.