Bilbao never really sleeps. From warm evenings by the river to pintxos-filled afternoons in the old town and lively festivals that take over the streets, this Basque city has something going on in every season. The best time to visit depends on what kind of trip you want, whether that means sunshine and festivals or quiet walks and culture.
Bilbao weather by season
Spring (March to May)
Spring is the perfect time to see Bilbao wake up. The parks are in bloom, café terraces fill up, and temperatures sit comfortably between 13°C and 20°C. Expect the odd shower, but also plenty of sunshine. It’s a great season for exploring the Guggenheim Museum, wandering through Casco Viejo, and enjoying a relaxed lunch outdoors.
Summer (June to August)
Long days, warm nights, and an unbeatable atmosphere make summer in Bilbao unforgettable. Average temperatures hover around 25°C, which is ideal for sun lovers and festival-goers. It’s also Bilbao’s busiest time, especially in August, so book your Portsmouth to Bilbao ferry well in advance. Summer is when the city comes alive with outdoor concerts, rooftop bars and late-night street life.
Autumn (September to November)
If you prefer things a little calmer, autumn is your season. September still feels summery, with around 22°C and fewer tourists. The hills around the city turn golden, perfect for hiking or road trips through the Basque Country. October and November bring cooler days and more rain, but also that cosy, authentic local vibe that pairs perfectly with museums and pintxo hopping.
Winter (December to February)
Winter in Bilbao is mild by British standards. Temperatures average around 10°C, and while rain is common, it’s rarely cold or bleak. It’s the best time to visit if you want to travel on a budget and skip the crowds. You’ll find twinkling Christmas lights, winter markets and plenty of great restaurants where you can settle in for slow lunches and good Rioja.
Seasonal Highlights and Festivals
Bilbao BBK Live (10 to 12 July 2025)
A huge open-air music festival on a hilltop overlooking the city. Expect world-class acts, stunning views and a buzzing crowd. If you’re visiting in July, this is the event to plan around. Tickets and accommodation sell out quickly, so make sure to book your ferry early.
- Official website: bilbaobbklive.com
Semana Grande / Aste Nagusia (9 to 16 August 2025)
Nine days of fireworks, street performances, dancing and Basque traditions. It’s Bilbao’s biggest festival and the perfect chance to experience the city’s true spirit. The Portsmouth to Bilbao ferry is an easy and scenic way to start the party, allowing you to arrive relaxed and ready to join the festivities.
- More info: sansebastiandetails.com
Christmas and New Year
During December, Bilbao glows with festive lights, winter markets and decorated shopfronts. It’s quieter, atmospheric and ideal for a short break focused on food, culture and a bit of shopping.
Travel tip: Start your trip the relaxed way
Skip the airport stress and take the ferry instead. Whether you’re bringing your car or just want a slower and more scenic start, sailing to Bilbao lets your holiday begin the moment you board.
Ferries offer spacious cabins, good food and even spa and wellness options on some ships. It’s not just transport, it’s part of the holiday.
