Semana Grande San Sebastián: Your Guide to Aste Nagusia

What Is Semana Grande and When Is It Held?

Semana Grande means 'Great Week' and it lives up to its name. The festival begins on the Saturday before August 15 and runs for eight days, always encompassing the Assumption Day holiday. For 2026, the official dates are August 8 to 15, a period confirmed by the city's tourism office. The festivities kick off with a cannon shot at Alderdi Eder square, near the town hall, at 7:00 p.m., a signal that the party has officially started. For future editions, like 2027, the exact dates are yet to be confirmed, so it's wise to check the official San Sebastián Turismo website closer to your travel time.

The festival's roots are deep in the city's calendar. Aste Nagusia has grown since its official inception in the mid-20th century into the most anticipated week of the summer for locals and visitors alike. While other Spanish cities have their own grand fiestas, San Sebastián's version stands out for its maritime setting and its blend of urban buzz and beachside relaxation. For a broader look at Spain's festival calendar, you can explore other famous celebrations like Las Fallas, but few match the sheer variety of Aste Nagusia's nightly fireworks and daytime sports.

Where Does Semana Grande Take Place?

The city's main stage is La Concha Bay, where the nightly fireworks competition unfolds. The promenade and the surrounding streets fill with spectators who come to watch the sky reflect off the water. Elsewhere in the city, the Parte Vieja (Old Town) buzzes with street performances, and the Zurriola Beach area hosts open-air concerts and a lively atmosphere. The Illumbe Bullring becomes the centre for the controversial bullfighting programme, a traditional part of the week for many aficionados. Across the city, parks and squares host traditional games, pelota matches, and children's entertainment, making the entire town a venue.

One of the pleasures of Semana Grande is simply walking from one event to the next, as the compact city allows easy movement between the beach, the old town, and the port. A festive highlight is the night-time amusement park set up along Paseo Nuevo, which stays open late and is a magnet for families and teenagers. Meanwhile, the rustic atmosphere of the Old Town's pintxo bars offers a welcome escape from the crowds, especially in the early evening before the main events begin.

Getting to San Sebastián and Getting Around

San Sebastián is well connected by air, rail, and road. The nearest airport is at Hondarribia, about 20 kilometres east, with regular flights from Madrid, Barcelona, and several European capitals. From the airport, you can take a bus or taxi into the city. If you're coming from other Spanish cities, the high-speed rail network now links San Sebastián with Madrid and Barcelona in around five hours, with the main station located in the city centre. Driving is possible, but parking in the city is notoriously scarce during festival week, so using public transport or arriving by train is highly recommended.

Once you're in San Sebastián, getting around is easy on foot. The city's core is compact and walkable, with the beaches, old town, and main venues within a short stroll. For longer distances, the local bus network (Dbus) runs efficiently, though expect some delays and detours around event areas, especially during fireworks displays. The tourism office publishes an event calendar that includes any special transport arrangements, so check their website for updates on any changes. Taxis are available but can be hard to flag down in the busiest hours, so reserve one in advance if you have a specific time constraint.

Top Events and Daily Activities

The heart of Semana Grande is the International Fireworks Competition, a nightly pyrotechnic display that has been running since 1964. Each evening at 10:45 p.m., a different company tries to win the prestigious Gold Shell, Silver Shell, or Bronze Shell awards. The show lasts about 20 minutes and illuminates La Concha Bay, with the public also voting for the Gran Prix of the Public. While the fireworks are the main spectacle, the days are filled with a rich programme of events.

During the day, you can watch traditional Basque sports such as regattas and pelota matches, often held in the bay or in dedicated courts. There are also traditional games for all ages, from wood-chopping to tug-of-war, that showcase the region's rural heritage. Concerts are a major draw, with both large-scale shows and intimate performances across the city. Children have their own dedicated areas with workshops, games, and theatre, ensuring the whole family is entertained. For a daily schedule, the official agenda provides a chronological list of events, so you can plan your day around what you don't want to miss.

The festival also maintains its connection to the sea with the famous regattas, where longboats row across the bay in a tradition that spans centuries. These races draw huge crowds to the shore, as locals cheer for their favourite teams. In the evenings, the entertainment often shifts to the Illumbe Bullring, where a series of bullfights are held, an event that generates strong debate about tradition and animal welfare. For those who prefer not to attend, there are plenty of alternative evening activities, including free concerts in different neighbourhoods.

Fireworks: Best Viewing Spots and Tips

The best views of the fireworks are from La Concha Promenade, where you can see the displays reflected in the bay. Arrive at least an hour early to secure a good spot, as locals and tourists alike claim their places well before sunset. For a different perspective, consider booking a boat tour that takes you into the bay, offering a unique vantage point from the water. The shows begin at 10:45 p.m. sharp, and last about 20 minutes, a spectacular performance of light, colour, and sound.

To make the experience more comfortable, bring something warm to wear as the evening sea breeze can be cool, especially in August. You might also want to carry a small snack or drink, though you'll be near plenty of vendors and kiosks. After the fireworks, the tradition is to enjoy an ice cream, a local habit that has become almost a ritual. This is a sweet way to end the night while the crowds disperse. For more detailed advice on enjoying the fireworks displays, check out our dedicated guide to Semana Grande fireworks, with extra tips on navigating the event.

Eating and Drinking During the Festival

San Sebastián is a food lover's paradise, and Semana Grande is the perfect time to indulge. The Parte Vieja is packed with pintxo bars where you can hop from one to another, sampling the city's famous bites. Look for local specialties like txakoli (a sparkling white wine) or cider. For a quintessential festival treat, stop at an ice cream parlour after the fireworks — a tradition that visitors quickly adopt. Many restaurants offer special festival menus, but they book up fast, so make reservations well in advance.

Festival venues also have food stalls and food trucks, offering everything from Basque sausages to global cuisine. The port area becomes a hub for outdoor dining and socializing, often with live music. During the day, fresh produce markets appear in the streets, where you can buy local cheeses, fruits, and pastries for a picnic on the beach. Whatever you choose, the festival treats your taste buds as much as your eyes.

Managing the Crowds and Practical Advice

Semana Grande draws enormous crowds, so patience and planning are essential. Be prepared for packed streets, especially in the Parte Vieja and near the fireworks viewing areas. Book your accommodation months in advance, as the city fills up quickly. During the festival, keep your belongings secure in crowded places, and stay hydrated, as the August sun is strong. Use the siesta hours in the early afternoon to rest or visit less crowded attractions, as many events resume later in the day.

For families, the daytime activities are easier to navigate with children, as the crowds are thinner before the evening sets in. Many children's areas have shaded spots and are well organized. If you need a break from the noise, head to the quieter parts of Zurriola Beach or the Urumea riverside. Always have a meeting point in case you get separated from your group. Mobile phone reception can be patchy in the most crowded spots, so agree on a landmark beforehand.

Family-Friendly Activities and Attractions

Semana Grande is surprisingly family-friendly, with a dedicated programme for children distributed across the city. In the mornings, you'll find workshops, puppet shows, and traditional games in several parks, such as the Alderdi Eder and the Cristina Enea park. The night-time amusement park on Paseo Nuevo is a big hit with kids, offering rides and games until late. Many of these activities are free, and they provide a safe environment for children to enjoy the festival in a relaxed way.

For a unique cultural experience, don't miss the traditional giants and cabezudos (big-headed figures) parading through the streets, a staple of Basque festivals. These colourful figures are accompanied by musicians and are always a delight for children, who love to see them dance. While the official programme may vary from year to year, these processions are a reliable feature of the festival week. Check the daily agenda posted by Donostia Kultura to see where and when they will appear.

Other August Events in San Sebastián

If you have time beyond Semana Grande, San Sebastián hosts other festivals in August. The Quincena Musical de San Sebastián, a classical music festival, runs for several weeks and offers concerts in stunning venues like the Kursaal and the Victoria Eugenia Theatre. This festival often overlaps with Semana Grande and provides a more serene cultural experience. Additionally, the city's vibrant jazz scene culminates in the Jazzaldia festival in late July, but throughout August you'll find live music in many bars and squares.

Plan your itinerary to make the most of these cultural offerings, as they add depth to your visit. The city's tourism office can provide you with a comprehensive calendar of all events, so you can piece together a diverse array of experiences. Whether you're a classical music aficionado or a jazz enthusiast, San Sebastián in August has something to satisfy every taste. This makes the city an ideal destination for a culturally rich summer holiday.

Practical Information: Tourism Office and Safety

The main tourist office is located at Ijentea, 1, right in the city centre, and is open daily during the summer. The staff can provide maps, event schedules, and advice on accommodation and transport. You can also contact them by phone at +34 943 481 166 or via email at sansebastianturismoa@donostia.eus. For safety, the festival is well-policed, but exercising common sense in crowded areas is always wise. Keep an eye on your belongings and be cautious of pickpockets.

In case of a medical emergency, the city's main hospital is Hospital Universitario Donostia, located a short drive from the centre. The emergency number in Spain is 112, which will connect you to police, fire, or ambulance services. It's a good idea to know the address of your accommodation and keep it with you. The festival is free to attend, and most events are free, but some, like bullfights, require tickets, which are available at the venue or online. Always verify the latest information on the official tourism sites, as schedules can change.

Plan Your Visit

Experiencing Semana Grande is to witness the soul of San Sebastián — a dynamic blend of tradition, festivity, and coastal charm. Whether you're drawn by the world-class fireworks, the family friendly atmosphere, or the exceptional food and drink, the festival offers an unforgettable summer week. With some smart planning, you can navigate the crowds and make the most every moment in this beautiful city.

Start by confirming the exact dates for your travel year from the official San Sebastián Turismo website, then book your accommodation and any major events well in advance. Once you're there, let the festival's rhythm guide you, from daytime sports to nighttime spectacles, and don't forget that after the fireworks, there's always room for an ice cream. Enjoy your Aste Nagusia!