Barcelona · Last updated 22 July 2026
The 2026 dates are confirmed. Detailed times are published by the city in early September and can change. Always check the official La Mercè site before you plan a specific hour. Written by the Tres Gatos team in Barcelona.
Every September the city hands its streets over for five days. Squares that normally hold parked scooters hold human towers instead. The Gothic Quarter fills with people walking backwards to get a photograph of a giant. And somewhere around the fourth evening, if you have been paying attention, you stop reading the programme and just follow the noise.
That is La Mercè, and 2026 falls on 23–27 September.
Egor has guided through eleven of these. What follows is the part that programmes tend to leave out: which days are worth planning around, which streets stop working, and where to stand when the fireworks start.
When is La Mercè 2026?
La Mercè 2026 runs from Wednesday 23 September to Sunday 27 September. The feast day itself is Thursday 24 September, the day of the Mare de Déu de la Mercè, one of Barcelona's two patron saints. Most years the festival is built around the weekend nearest the 24th, which is why the dates shift slightly from one year to the next.
The five-day shape matters more than it sounds. The 23rd is an opening evening, the 24th is the ceremonial centre, and the weekend carries the largest crowds and the closing fireworks. If you have one day in the city, the 24th and the final Sunday do very different things.
La Mercè has been an official city holiday since 1871, when the council first put together a programme of activities around the feast day. Much of what you will see — the parades of giants, the fire runs — took its modern shape in 1902.
Source: La Mercè, Barcelona City Council
Is La Mercè free?
Yes. Effectively all of La Mercè is free and open to the public — the concerts, the parades, the human towers, the fire runs, the street arts and the closing fireworks. Nothing needs a ticket and nothing needs booking. The city puts on around five hundred activities across the five days, spread over several strands: MAC (Mercè Arts de Carrer) for street arts, BAM and Música Mercè for the concerts, Acció Cultura Viva, and the popular-culture programme.
This is worth saying clearly, because a festival this size in most European cities would have a wristband and a price. Barcelona's does not. What it costs you is patience with crowds.
Source: La Mercè programme, Barcelona City Council
Which city is the guest in 2026?
Shanghai — the first Asian city ever invited to La Mercè, and the invitation marks twenty-five years of twinning between the two cities. More than a hundred artists take part, from Shanghai itself and from Barcelona's own Chinese community, across street arts, tradition and music.
Each year La Mercè invites a guest city to bring its own programme into the festival, usually spread across several venues rather than concentrated in one. Recent years have brought Casablanca and Kyiv. The guest-city strand is often the quietest part of the festival and the easiest to get close to. If the correfoc crowds have worn you out, this is where to go.
Source: La Mercè 2026, Barcelona City Council
Is 24 September a public holiday in Barcelona?
Yes, 24 September is a local public holiday in Barcelona. Many shops close or keep short hours, offices shut, and public transport runs to a holiday timetable. Restaurants and bars in the centre stay open and get very busy. Museums are the exception in the other direction — a large number open their doors free of charge that day.
One thing the guidebooks rarely mention: 24 September is one of a handful of nights each year when the Barcelona metro runs continuously, alongside New Year's Eve, Sant Joan and 15 August. Check the timetable for the exact night before you rely on it, but the practical effect is that you can stay out for the fireworks and still get home.
Plan the 24th as a walking-and-watching day, not an errands day. If you need a pharmacy, a bank, or a bike shop, do it on the 23rd.
Source: TMB metro and bus operating hours
What happens on each of the five days?
The city council publishes the detailed hour-by-hour programme only a few weeks beforehand, so exact times for 2026 are not out yet. The shape, however, repeats reliably year to year.
Wednesday 23 September — opening. The pregó, the opening address given each year by an invited figure, and the first sardanes in front of the Cathedral on Avinguda de la Catedral. Music stages start the same evening.
Thursday 24 September — the feast day. The ceremonial heart of the festival. Popular culture takes Plaça de Sant Jaume: gegants, capgrossos, the city's festive bestiary, the falcons and the castellers. The Cavalcada de la Mercè, the central parade, moves through the streets with giants up to four metres tall. Museums open free. Mass at the Basílica de la Mercè in the morning.
Friday and Saturday — the music. BAM (Barcelona Acció Musical) and Música Mercè carry the concert programme across open-air stages: in recent years Moll de la Fusta, Plaça Reial, Rambla del Raval, the Antiga Fàbrica Estrella Damm and Plaça de Catalunya. Every stage is free. MAC, the street-arts strand, runs through the same days across Via Laietana, La Rambla and the surrounding squares.
Sunday 27 September — the close. The largest castellers gathering, the correfoc through the old city in the evening, and then the piromusical at the foot of Montjuïc to finish.
We will update this section with confirmed times as soon as the city publishes the 2026 programme.
Source: La Mercè programme by day
Where do the castellers perform, and when should you arrive?
The main castellers gathering happens in Plaça de Sant Jaume, with the city's colles building through the afternoon and the largest attempts saved for last. Smaller diades take place on other days in the same square and outside the Cathedral. Arrive at least forty-five minutes early if you want to see anything at all.
Castells are the part of La Mercè most worth understanding before you watch. A tower of eight, nine or occasionally ten levels is built by a crowd of a few hundred people pressed into the pinya at the base, and the child who climbs to the top — the enxaneta — raises a hand when the structure is complete. That raised hand is the moment the square erupts. Knowing that in advance is the difference between watching a crowd and watching a thing being finished.
What is the correfoc, and how do you watch it without getting burned?
The correfoc is a fire run: diables dressed as devils move through the streets with fireworks mounted on pitchforks, showering sparks over anyone standing close. It runs in the evening through the old city. Spectators who want to be in the middle of it wear old cotton clothing, long sleeves, closed shoes, a hat, and nothing synthetic.
If that sounds like more than you want, stand back from the route rather than skipping it. The correfoc is loud from a hundred metres away and the drums carry further than the sparks. Children are usually better served by the correfoc infantil, which runs earlier in the day at a much lower intensity.
Cotton, incidentally, is not a superstition. Synthetic fabric melts.
When is the piromusical, and where do you stand?
The piromusical closes the festival on the final evening, at the foot of Montjuïc on Avinguda de la Reina Maria Cristina, usually starting around ten at night. Fireworks are set to music above the Magic Fountain and the Palau Nacional. It draws one of the biggest crowds of the year, and people begin claiming space on the avenue two hours ahead.
There is a second fireworks display earlier in the festival on the Barceloneta seafront, between the Sant Miquel and Somorrostro beaches. It is smaller, less crowded, and easier to leave.
On the piromusical: the avenue itself is packed and the metro afterwards is worse. The slope of Montjuïc above the Palau Nacional gives you the same show from behind and a much calmer walk home. So does the far end of Plaça d'Espanya, if you are willing to trade some of the scale for the ability to move.
Are museums free during La Mercè?
Many of Barcelona's museums hold an open-doors day on 24 September, and some extend free entry to other days of the festival. In recent years that has included the MNAC, the Museu Picasso, the Fundació Joan Miró, MACBA, the CCCB, the Fundació Antoni Tàpies, the Museu de la Música and El Born Centre de Cultura i Memòria.
One catch that catches people out every year: free does not mean walk-in. Several of the busiest venues require a booking even when the ticket costs nothing, and slots go days ahead. The Museu Picasso has asked for reservations several days in advance in recent editions; the Miró and the MNAC have recommended or required them too. If a specific museum matters to you, look at its own site in early September rather than turning up on the day.
The full list is published with the programme.
Sources: Museu Picasso open-doors day · Museu de la Música open doors
Is Barcelona crowded during La Mercè?
Yes, though less than people expect, and not evenly. La Mercè is largely a local festival — the crowds are Barcelona's own, not a second wave of summer tourism. September visitor numbers sit below the August peak, and the weather is better for walking. What changes is density: Ciutat Vella, Plaça de Sant Jaume, the Barceloneta seafront and Avinguda de la Reina Maria Cristina become genuinely difficult on the busiest evenings.
The rest of the city carries on. Gràcia, Sant Antoni, Poblenou and the upper Eixample are ordinary. If you want a quiet dinner during La Mercè, walk twenty minutes uphill and you will find one.
La Mercè is the biggest of them, but it is not the only thing happening — the neighbourhood festivals in Gràcia and Sants come earlier, in August. Our calendar of Barcelona festivals in 2026 has the dates for the rest of the year.
Can you cycle in Barcelona during La Mercè?
Yes, with adjustments. The road closures during La Mercè are concentrated and predictable: Ciutat Vella around Plaça de Sant Jaume and the Cathedral, sections of Via Laietana and La Rambla during the street-arts programme, the correfoc route in the evening, and the area around Plaça d'Espanya and Avinguda de la Reina Maria Cristina on the night of the piromusical. Outside those, the city's bike lanes run normally.
Mornings are the answer. The festival is an afternoon-and-evening animal, and between nine and one the streets belong to whoever wants them. The waterfront, Ciutadella, the Born and the Eixample grid are all rideable, and the city is at its best in that particular light before the stages switch on.
We run our tours through the La Mercè week and adjust the route each morning rather than in advance, because the closures shift with the programme. Egor checks the barriers on his way in and decides then. It is the part of the job that never appears in any description, and it is most of the reason the tours still work that week.
Riding with us during the festival week means someone has already checked which streets are open that morning.
When is the full 2026 programme published?
The city council usually releases the detailed programme two to three weeks before the festival, which puts the 2026 publication somewhere in early September. Until then only the dates and the broad structure are confirmed. The programme goes live on the official site and in the city's own app at the same time.
For anything specific, the city's culture office answers by phone on 933 161 000 or by email at infoicub@bcn.cat, and the municipal 010 line handles general questions.
This is genuinely inconvenient if you are booking flights in July, and there is no way around it. Plan the dates now and the hours later.
Source: La Mercè, Barcelona City Council
Is there a La Mercè app, and is it worth downloading?
Yes — "Mercè, Festa de Barcelona", published by the city council itself, free on both iOS and Android, in Catalan, Spanish and English. With five hundred activities spread across every district, it is the only practical way to hold the programme in your head. It goes live at the same time as the printed programme, in early September.
What it actually does:
- The full daily schedule, filterable by day, type of activity, district, venue or time slot, with a keyword search over the lot.
- A list of artists by category — so if you came for the music, you can start from the performer rather than working backwards from a stage and an hour.
- Favourites. Mark the artists and events you want, and they collect into your own shortlist with notifications before they start. You can push them into your phone's calendar or send them to whoever you are travelling with.
- An interactive map with venues and directions, which matters more than it sounds when a stage is on a square you have never heard of.
- "Here and now" — the one worth knowing about. It shows what is happening near you at this moment, which turns an unplanned evening into a good one. Grouped searches for the BAM concerts and the MAC street-arts programme work the same way.
A fair word about it: the app is rebuilt each year and the quality has moved around between editions, with some years drawing complaints about the filters. Download it when you arrive rather than in July, and treat the official site as the thing to check if something looks wrong.
Source: La Mercè app, Ajuntament de Barcelona
A short, practical summary
| Dates | 23–27 September 2026 |
| Feast day | Thursday 24 September (local public holiday) |
| Cost | Free, no tickets, no booking |
| Guest city | Shanghai — first Asian guest city, 25 years of twinning |
| Scale | Around 500 activities across five days |
| Where it concentrates | Ciutat Vella, Plaça de Sant Jaume, Barceloneta seafront, Montjuïc |
| Programme published | Early September 2026 |
| Official site | barcelona.cat/lamerce |
| Official app | Mercè, Festa de Barcelona — iOS · Android |
Five days is a lot of festival, and nobody sees all of it. If you are here for one of them, take the 24th for the castellers and the museums, or the final Sunday for the correfoc and the fireworks, and let the rest go.
And if the first morning of your trip lands inside that week, come and ride with us. Egor will have already been past the barriers on his way in.
FAQ: La Mercè 2026
When is La Mercè 2026 and how long does it last?
La Mercè 2026 runs for five days, from Wednesday 23 September to Sunday 27 September. The feast day is Thursday 24 September, which is a local public holiday in Barcelona.
Do I need tickets for La Mercè?
No. The festival is free, and none of the main events — concerts, castellers, correfoc, parades, fireworks — require a ticket or a booking. The one exception is museums on their open-doors day: entry is free, but several of the busiest ones ask for a reservation in advance.
What should I wear to the correfoc?
Old cotton clothing with long sleeves, closed shoes and a hat if you plan to stand near the fire. Nothing synthetic — it melts. If you would rather watch from a distance, ordinary clothes are fine; the sparks do not reach the back of the crowd.
Is La Mercè suitable for children?
Much of it, yes. The gegants and capgrossos parades, the sardanes and the daytime street arts are made for families, and there is a correfoc infantil that runs earlier in the day at a much lower intensity. The evening correfoc and the late piromusical are loud and very crowded, and less so.
What is the weather like in Barcelona in late September?
Late September in Barcelona is usually warm without being heavy — comfortable for walking and cycling all day, and mild enough in the evening that outdoor concerts work. Rain is possible but not typical. It is one of the better weeks of the year to be outside in the city.
Do I need to book restaurants during La Mercè?
In Ciutat Vella and around the main stages, yes — those evenings fill up. Twenty minutes' walk from the centre, in Gràcia, Sant Antoni or Poblenou, an ordinary weeknight booking is usually enough.
What is the difference between La Mercè and a Festa Major?
A festa major is a neighbourhood festival — Gràcia and Sants hold the best-known ones in August. La Mercè is the festa major of the whole city, which is why it is bigger, runs across every district, and comes with a public holiday.
Where can I see the human towers?
Plaça de Sant Jaume is the main site, with the largest gathering on the closing weekend and smaller diades on other days there and outside the Cathedral. Arrive at least forty-five minutes early.
Can I cycle in Barcelona during the festival?
Yes. Closures are concentrated in Ciutat Vella, along parts of Via Laietana and La Rambla, on the correfoc route in the evening and around Plaça d'Espanya on the night of the piromusical. Mornings between nine and one are largely unaffected, and the bike lanes elsewhere run normally.
How do I keep track of the programme during the festival?
Download the city council's own app, "Mercè, Festa de Barcelona", free on iOS and Android and available in English. It carries the full schedule with filters by day, district and venue, a list of artists you can mark as favourites so the app reminds you before they play, an interactive map, and a "here and now" view of what is happening nearest to you. It goes live in early September, along with the printed programme.
Is it worth planning a trip to Barcelona around La Mercè?
If you want to see the city as its own residents celebrate it, yes — this is the week for it. If you want quiet streets and short museum queues, come in the first half of September instead. Both are good weeks; they are simply not the same week.
Questions about a specific date, or whether a tour runs on the 24th? Write to us at barcelona@tresgatos.es, in whichever language you prefer — we will reply in the same one.
