The next Saturday, August 15, 2026, is a national holiday throughout Spain for the Assumption of the Virgin, a circumstance that will modify the usual hours of numerous supermarkets. However, there is not a single answer for the entire country: Mercadona, Carrefour, Lidl, Aldi, and DIA apply different openings depending on the autonomous community, the locality, and even the specific establishment.
The main recommendation is to consult the official search engine of each company before leaving home. The chains already show special hours in part of their establishments, especially in tourist areas where opening on holidays is more common.
Mercadona: check each store
Mercadona does not publish a unique national schedule for holidays. The company itself refers to its supermarket search engine to check whether each establishment opens on Sunday or holiday and what its specific hours will be.
This becomes especially important during August, as some stores located in destinations with high tourist influx may apply different calendars from the rest of the network.
Therefore, it cannot be stated that all Mercadona stores will open or close on August 15. The opening must be checked store by store on the official website before traveling.
Carrefour: there will be stores open on holidays
Carrefour has a specific section to consult the openings on Sundays and holidays of each establishment. The company distinguishes between hypermarkets, Carrefour Market, and Carrefour Express, so the hours may vary considerably even within the same city.
Some stores expressly indicate special hours during holidays. For example, certain hypermarkets maintain full hours from 9:00 AM to 10:00 PM, while some Carrefour Express reduce service to shorter time slots.
The opening on August 15 must be checked on the specific supermarket's page.
Lidl: hours depend on the establishment
Lidl also does not apply a unique schedule for all of Spain. Its customer service recommends entering the locality in the official store search engine to consult the updated opening hours of each supermarket.
In tourist areas, establishments may be found open during Sundays and holidays, while others remain closed.
For this reason, it should not be taken for granted that a Lidl will be open on August 15 simply because it usually opens on Saturdays. The festive nature of the day may modify the usual hours.
Aldi: several stores already confirm opening on August 15
Aldi is one of the chains that offers especially detailed information about special hours in the individual sheets of its establishments.
There are stores that already confirm their opening for August 15, 2026. The Aldi on Calle de la Cruz, in Torremolinos, is listed as open from 9:00 AM to 10:00 PM, the same hours as establishments in Estepona, Fuengirola, Mijas, or the center of Seville.
But there is also no uniform range. The Aldi in Xàtiva announces for that day a schedule of 9:00 AM to 9:30 PM, while the one in Platja d'Aro plans to open from 8:00 AM to 10:00 PM.
These examples show why the hours should always be checked by locality.
DIA: some stores also open on Sundays
DIA indicates that most of its supermarkets usually operate from Monday to Saturday approximately from 9:00 AM to 9:30 PM, although there are establishments that also open on Sundays. The chain also recommends checking each store in its official locator to know the exact hours.
The company does not offer a single national schedule for August 15, so the opening will depend on the supermarket and the applicable commercial regulation in each area.
Why hours change so much on August 15
Although August 15 is a national holiday, commercial regulations allow certain communities and municipalities to establish authorized opening days. This is supplemented by exceptions for establishments located in areas of high tourist influx.
For this reason, two supermarkets of the same chain can have completely different hours that Saturday: one may remain closed, another may open only in the morning, and a third may maintain practically its usual schedule.
The situation is especially frequent in coastal tourist destinations and large cities, where chains usually have more stores authorized to open on holidays.
How to know if your supermarket opens on August 15
The most reliable check is to access the official search engine of the chain, enter the city or postal code, and open the sheet of the specific establishment.
In Mercadona, you have to check the section of openings on holidays; Carrefour has its own holiday calendar; Lidl shows the hours from the locator; Aldi includes a section of "Special hours"; and DIA allows you to search for each store by locality.