The patron of Castelcucco is Saint George, celebrated on 23 April, to whom the Chiesa di San Giorgio Martire is dedicated.
Every year, on the second weekend of July, the Festa della Birra (Beer Festival) is set up, and throughout August, in the locality of San Bortolo, three festivals follow on three consecutive weekends: that of the Alpini, that of the AVIS blood donors and the Hunter's Festival.