Midnight Mass will still be celebrated on Christmas Eve, officials said, but it will take place at the nearby church of Saint-Germain l'Auxerrois.
The 850-year-old Gothic cathedral, a Unesco World Heritage site, lost its spire and roof during the blaze.
President Emmanuel Macron has set a five-year goal for its reconstruction.
In October, the French culture ministry said nearly €1bn (£850m; $1.1bn) had been raised or pledged for the work.
More about: Notre-Dame-Cathedral
