The patrons of Isola Rizza are Saints Peter and Paul, celebrated on 29 June in the Church of San Pietro e Paolo.
The second-to-last weekend of September hosts the festival dedicated to Our Lady of Sorrows, featuring local specialties such as risotto all'isolana and mixed boiled meats. The town holds numerous 16th-century villas, including Villa Sagramoso Buri Ferrari and Villa Mandella.