Festivities of Nules Activity · Nules, La Plana Baixa, Castellón Image of Nules, not of the place itself. Nules celebrates San Bartolomé in the week of 24 August, its most notable festival, with bulls and activities by local clubs, and the Virgen de la Soledad in the first half of October, with bous al carrer and the Juegos Florales in Valencian. Photo: Wikipedia / Wikimedia Commons (CC BY-SA) What to see and do in Nules