Every September, Barcelona stops working for five days. La Mercè, the city’s main festival, turns streets, squares and beaches into one enormous stage — and almost all of it is free. In 2026 it runs from Wednesday 23 to Sunday 27 September.
At a glance
| Dates | 23–27 September 2026 |
| Where | Everywhere: Ciutat Vella, Montjuïc, the seafront, all ten districts |
| Price | Free for almost everything, BAM and Música Mercè concerts included |
| Peak day | 24 September, the official feast day and a local public holiday |
| 2026 guest city | Shanghai |
Where the festival comes from
La Mercè honours the Virgin of Mercy, co-patron of Barcelona since 1687, the year the city credited her with ending a plague of locusts. The modern festival dates from 1902: a free, popular, secular programme that today runs to more than 500 activities and draws around two million people.
Five things not to miss
1. The correfoc
This is the image everyone takes home. “Devils” carrying firework-tipped pitchforks run through the crowd to the beat of drums, in a shower of sparks. It isn’t a show you watch from a distance — regulars step into the fire, wearing thick cotton clothes, a hood, a cap and closed shoes. Nothing synthetic, never shorts. A gentler children’s correfoc (correfoc infantil) takes place earlier in the day.
2. The castells
The human towers, listed by UNESCO as intangible heritage, are built on Plaça Sant Jaume. Dozens of people stack up eight or nine levels high, until a child climbs to the top and raises a hand. The silence of the crowd during the climb is worth the trip on its own. Get there 45 minutes early if you want to see anything.
3. Giants and parades
The gegants, towering figures carried on people’s shoulders, parade with the capgrossos (big heads) and the bestiari — dragons, the mulassa, the city eagle. The most impressive format is the cercavila, the procession that winds through the Gothic Quarter.
4. BAM and Música Mercè
Two free open-air music festivals in several parts of the city. BAM (Barcelona Acció Musical) programmes the independent and emerging scene; Música Mercè is more mainstream, mixing pop, Catalan rumba and world music. Full line-ups come out in early September.
5. The piromusical
The grand finale: a fireworks, music and water show on the Sunday night that closes the festival. It traditionally takes place at the Font Màgica on Montjuïc, but because of works on the hill the 2026 edition is launched from Bogatell beach, on Sunday 27 September at 10pm. The good news: it can be seen from much of the seafront, from Barceloneta to Poblenou.
MAC, the street-arts side of la Mercè
MAC (Mercè Arts de Carrer) fills parks and squares with circus, dance and street theatre: Parc de la Ciutadella, Fabra i Coats, Moll de la Fusta. It is the most family-friendly part of the programme, runs in daylight, and is often the most surprising — international companies performing for free in front of a few hundred people.
Practical advice
- 24 September is a public holiday in Barcelona. Many shops close or open reduced hours, while museums often go free that weekend. Check before you set off.
- Take the metro. Whole streets are closed, buses rerouted, and taxis take forever. The metro runs all night from Saturday to Sunday.
- Book restaurants. Over these five days good tables in the centre fill up days in advance. Our tested addresses are on the Where to eat page.
- Have a backup plan for the evening. After a correfoc or a concert, central bars overflow. Our picks by neighbourhood are on the Nightlife page.
- Watch for pickpockets. This is the year’s peak for crowded streets: bag in front, no phone in a back pocket.
- Accommodation doubles in price that week. If you’re reading this for 2027, book in spring.
What to see, depending on who you are
- With kids — MAC during the day at the Ciutadella, the children’s correfoc, the giants. Skip the evening correfoc.
- For music — BAM, after dark, across several open-air stages.
- For tradition — Plaça Sant Jaume: castells on Sunday morning, the toc d’inici and sardanes.
- For photos — Sunday’s piromusical, and the correfoc devils at the start of the route before the crowd closes in.
And after la Mercè?
September is when Barcelona’s real season starts: fewer people than in August, sea still at 23 °C, terraces open until midnight. The weeks that follow — 48h Open House, the jazz festival, la Castanyada — are kept up to date on our Events page, and our seasonal ideas are gathered in Barcelona in autumn.
Looking for a group activity during the festival? Most workshops and tours run as normal during la Mercè, but places go fast: see our activities to book and buy a week ahead.