Aste Nagusia (Semana Grande) - Mid-August: Bilbao's biggest celebration lasting nine days. The festival begins when 'Marijaia', a smiling female figure with raised arms, appears. Events include traditional Basque sports, bullfights, concerts, fireworks over the river, street parties, and open-air txosnas (temporary bars). The entire city celebrates with music, dancing, and festivities day and night.
Bilbao BBK Live - Early July: Major international music festival held at Kobetamendi mountain with stunning views. Attracts top rock, indie, and electronic acts. Three-day camping and concert event drawing music fans across Europe.
Santo Tomás - December 21: Traditional festival celebrating Basque rural culture. Plaza Nueva and other squares host stalls selling talo (corn flatbread) with chorizo or cheese, local cider, and produce. Locals dress in traditional Basque costume. Farmers showcase products.
Carnaval - February/March: Week-long celebration before Lent with costume parades, music, and parties. Neighborhoods host competitions for best costumes.
Easter Week (Semana Santa) - March/April: Religious processions throughout the city, particularly in the Old Quarter. Solemn yet beautiful tradition.
Bilbao Night Marathon - October: Unique nighttime marathon through illuminated city streets. Also includes 10K and fun runs.
Zinebi (International Documentary & Short Film Festival) - November: One of world's oldest competitive short film festivals, showcasing innovative cinema.
Durango Fair - December: Nearby Durango hosts annual Basque Book and Record Fair, celebrating Basque language and culture with concerts and cultural events.
National Holidays: New Year's Day (Jan 1), Epiphany (Jan 6), Good Friday, Easter Monday, Labour Day (May 1), Assumption (Aug 15), National Day (Oct 12), All Saints (Nov 1), Constitution Day (Dec 6), Immaculate Conception (Dec 8), Christmas (Dec 25).