When Is Mardi Gras 2025 In Louisiana. However, carnival celebrations always begin on january 6, a date referred to in the christian calendar as the twelfth night. Mardi gras, fat tuesday, will next be celebrated in louisiana on tuesday, march 4, 2025.

Mardi gras next year falls on march 4, about two weeks before st. Mardi gras 2025 is six months away.