Every guide to San Fermín tells you the same thing: come early for the chaos and the Txupinazo, or come late for a calmer, cheaper version of the same festival. That advice treats San Fermín’s nine days as a sliding scale from loud to quiet. It isn’t one. The dates of the festival never move. July 6 to July 14, every year, without exception. But the days of the week those dates fall on move constantly, and it is the weekday, not the date’s position in the nine day run, that actually decides how crowded, expensive, and chaotic your specific trip will be.
Get this wrong and the standard advice actively misleads you. A traveler who books a hotel for what a blog calls a “quiet, late fiesta night” could walk straight into a weekend crowd surge that behaves nothing like the calm the guide promised, simply because in that particular year the fiesta’s weekend happened to fall late instead of early. The same trap works in reverse. A supposedly safe “early and busy” date could turn out to be a quiet Tuesday, if the calendar breaks that way. Planning around “early vs late” without checking where the weekend actually lands wastes the one piece of information that would have told you the truth.
This comparison draws on the City of Pamplona’s own festival program, the Pamplona Hotel Association’s published occupancy forecasts as reported by Diario de Noticias, AEMET’s official climate data for the 2026 fiesta week, and the city’s published order of ganaderías (bull breeding ranches) running each morning. None of it comes from a repeated rule of thumb. All of it comes from checking what the numbers actually say in a given year.
The Dates Are Fixed. The Weekday Isn’t.
San Fermín runs July 6 through July 14 every single year, a fact confirmed directly by Visit Navarra, the region’s official tourist board, and by the Ayuntamiento de Pamplona’s own festival pages. That fixed window is exactly why the best time to visit San Fermín depends less on which of the nine days you pick than on which day of the week that date happens to be in your travel year.
The window itself has history behind it. San Fermín wasn’t always a July festival. Until 1591, Pamplona held the saint’s feast day on October 10, and the city’s bishop petitioned to move it after repeated complaints about cold, wet weather ruining the celebration. The Ayuntamiento shifted the date to align with the region’s summer livestock fair and the warmer weather it brought, and the July 7 date stuck from 1591 onward, with the surrounding nine day window taking its current shape later. Four centuries later, the calendar that resulted is fixed by date, not by weekday, which is exactly the detail that trips up “early vs late” advice today.
Run the calendar forward and the problem with “early vs late” becomes obvious. In 2026, July 6 falls on a Monday, which pushes the festival’s in-fiesta weekend (a Saturday and Sunday) to July 11 and 12, squarely in the back half of the run, the stretch every generic guide calls “late fiesta.” In 2027, July 6 falls on a Tuesday, and the weekend lands July 10 and 11, close to the midpoint. In 2028, July 6 falls on a Thursday, and the weekend lands July 8 and 9, solidly in what the same guides call “early fiesta.” Three consecutive years, three different answers, using the identical “early or late” framework. The framework is not wrong because it’s poorly researched. It’s wrong because it is answering a question the calendar doesn’t hold still for.
The fix is simple and takes thirty seconds: before booking, check which weekday your travel dates fall on for the actual year you’re going, not the general reputation of “day three” or “day seven.” San Fermín’s daily structure also isn’t identical across all nine days to begin with, which compounds the same mistake if you assume every day in a given stretch behaves the same way.
Hotel Data Shows an Opening Rush, Not a Smooth Taper
The Pamplona Hotel Association’s 2026 forecast, reported by Diario de Noticias, projected 81.7% average occupancy across the festival, with 78.6% of hotels naming the nights of July 5, 6, and 7 as one of their strongest demand windows. Average guest stays run just 2.1 days, meaning most visitors concentrate their trip around the opening rather than spreading it evenly across all nine nights. That is an opening rush, not a gradual decline from crowded to calm.
The trend holds across recent years: forecast occupancy sat at 80.87% in 2024, rose to 83.42% in 2025, and settled at 81.7% for 2026, all figures independently reported by Diario de Noticias, Pamplona Actual, and COPE. But occupancy percentages don’t explain the mechanism. A separate Diario de Noticias report from 2022 does: whichever weekend falls inside the festival run pushes hotel occupancy to 100%, regardless of where in the nine days that weekend lands. That’s the same weekday effect from the section above, showing up directly in booking data.
Worth noting for anyone assuming the festival sells out entirely: the Hotel Association’s own public message alongside its 2026 forecast was that rooms remain available, especially toward the festival’s final days. “Fully booked” is a first-weekend problem, not a nine-day one, though where you actually book matters as much as when.
The Closing Night Breaks the “Late Fiesta Is Calm” Rule Completely
If “late fiesta” really meant calmer and quieter, the very last night should be the calmest of all. It is the opposite. Pobre de Mí, the ceremony that closes San Fermín at midnight on July 14, packs Pamplona’s Plaza Consistorial, a square of roughly 2,502 square meters, with an estimated 10,000 to 12,000 people. The crowd is dense enough that the city has had to add new public viewing points around town specifically for Pobre de Mí, because the plaza itself cannot hold everyone who wants to attend.
That single fact should end the “early is busy, late is calm” framing on its own. The Pobre de Mí ceremony is not a quiet coda to a winding-down week. It is the festival’s second-biggest crowd event after the Txupinazo itself, and it happens on what every generic guide calls the “quietest” end of the run.
Weather Doesn’t Consistently Favor Either End
Pamplona’s average July maximum, per AEMET (Spain’s national weather agency), is 27.7°C. That average is not a reliable guide to any specific week of the festival. During the 2026 fiesta, temperatures broke records at the opening: 39.3°C on July 6, the day of the Txupinazo, and 41.4°C on July 7, San Fermín’s own feast day and the hottest July 7 Pamplona has recorded. The average high across just the first three days reached 39.2°C, roughly 11.5 degrees above the July norm.
The lesson isn’t that early fiesta runs hot. It’s that neither end of the nine days carries a built-in weather advantage. Heat waves, storms, and cool snaps can land on any date, in any year, and the only reliable approach is checking the forecast close to your actual travel dates rather than assuming a “which week” rule protects you either way.
Which Bulls Run Also Changes by Day, Not Just the Crowd
Crowds and prices aren’t the only thing that shifts day to day. Each of the eight running days features toros bravos from a different ganadería (bull breeding ranch), publicly announced in the city’s official festival program well before the fiesta begins. For 2026, the published order ran Fuente Ymbro on July 7, Cebada Gago on July 8, Victoriano del Río on July 9, Álvaro Núñez on July 10, José Escolar on July 11, La Palmosilla on July 12, Miura on July 13, and Jandilla closing the run on July 14. Pamplona’s ganadería selections change every year, and each ranch has its own reputation among people who follow the encierro closely, which gives visitors watching from the barriers a genuine, non-crowd-related reason to favor one date over another.
Frequently Asked Questions
Is it better to visit San Fermín early or late in the festival?
Neither is reliably better, because “early” and “late” don’t map to fixed crowd or price levels. What matters is checking which days of the week your travel dates fall on that year and whether they include the in-fiesta weekend, which drives crowds far more than a date’s position in the nine days.
What is the least crowded day of San Fermín?
There’s no single fixed answer. Weekdays that don’t include a Saturday, Sunday, the July 6 Txupinazo, or the July 14 Pobre de Mí closing tend to draw fewer visitors, but which specific dates those are changes every year depending on where the calendar’s weekend falls.
Are hotel prices lower at the end of San Fermín?
Generally yes, based on Pamplona Hotel Association data showing the heaviest demand concentrated around July 5, 6, and 7. Rooms typically remain available later in the festival. The exception is the closing weekend and July 14 itself, when Pobre de Mí draws its own surge.
What day of the week does San Fermín start in 2027?
July 6, 2027 falls on a Tuesday, which puts the festival’s in-fiesta weekend (July 10-11) close to the midpoint of the nine day run rather than at either end.
Every article on the Encierro blog is authored or reviewed by active bull runners with direct experience in Pamplona.