The patron of Bulciago is Saint John the Evangelist, celebrated on 27 December in the Church of San Giovanni Evangelista.
Every year, on 16 July, the feast of Our Lady of Mount Carmel is celebrated: in the hamlet of Bulciaghetto stands the shrine dedicated to her, commonly called «Madonna dei morti dell'Avello», in dialect «dei mort del navel». The town also holds the Small Museum of Rural Tradition and overlooks the Valle del Lambro Park.