The patron of Baiano is Saint Stephen, celebrated on 3 August in the Church of Santo Stefano.
At Christmas, the Festa del Maio is held: between 13 December and Christmas Eve, the «messe 'e notte» are celebrated at 5 in the morning, so that the faithful can then go to work. In a courtyard of the historic centre, a nativity scene is set up, and on Christmas Eve evening the Baby Jesus is carried there in procession. The town also holds the Church of Santi Apostoli Filippo e Giacomo.