Chems-Eddine Hafiz said in a statement that gathering of worshippers in mosques could lead to further spread of the coronavirus, Youm7 website reported.
Thus, he said, Muslims are advised to avoid going to masques in Ramadan.
He added that according to Islamic teachings, temporary suspension of religious rituals when there is danger to health of individuals is allowed.
France closed large mosques and places of worship on March 9 due to the coronavirus outbreak.
More than 1,7 million people have been infected with COVID-19 globally, and the death toll has exceeded 103,000.
France has announced more than 124,000 coronavirus infections so far and the death toll is over 13,000.