St Isidore the Farmer is kept liturgically on 15 May; in many Andalusian towns the patronal festival stretches across several days. This slug marks the weekday of that cycle — in 2026, Monday 18 May — that the labour calendar records as a local holiday.
Verified data
In 2026, the dataset records San Isidro festivals (weekday of the cycle) as a local holiday in 5 municipalities, accounting for 15,853 residents in the 2025 register. The most common date is 18 May 2026.
This comparison uses only the official working calendars incorporated into the dataset for each year.
Demographic profile
Age, citizenship, birthplace and average-age structure from the 2025 Annual Population Census.
49.5% / 50.5%
13.4%
66.4%
20.2%
6.5%
7.7%
44.3 years
Comparison with Spain and with the aggregate of the region where it is observed. All five comparisons are population-weighted and use only the 2025 Annual Census. A positive sign means the covered population has a higher value than the benchmark.
| Demographic profile | Covered population | Compared with Spain | Compared with its region |
|---|---|---|---|
| Aged 0–14 | 13.4% | +0.5 pp | -0.3 pp |
| Aged 65+ | 20.2% | -0.5 pp | +1.1 pp |
| Foreign citizenship | 6.5% | -7.6 pp | -3.9 pp |
| Born outside Spain | 7.7% | -11.6 pp | -5.4 pp |
| Weighted mean age | 44.3 years | -0.2 years | +0.8 years |
The largest difference from Spain is in “Born outside Spain”: -11.6 pp.
Sex comes from the 2025 municipal register; all other metrics come from the 2025 Annual Census. Each percentage uses the total from its own statistical operation. INE municipal tables 68535 and 68541.
Isidore (Madrid, c. 1080–1130) was a farm labourer canonised in 1622 and became patron of Madrid and of Spanish farmers. His 15 May memorial historically recalls the translation of his body; in rural Andalusia the feast usually mixes Mass, procession, blessing of the fields, pilgrimage, decorated floats and evening verbena.
When the 15th falls mid-week or a multi-day fair is planned, the town hall may make another day of the cycle non-working — the “weekday” published in the bulletin. In 2026 that weekday is 18 May in municipalities such as Benamocarra, Lopera, Pedro Abad, Sierra de Yeguas and Villablanca.
It does not replace the liturgical feast of the 15th or Madrid’s famous Isidore celebrations: it is the dataset label for the Andalusian patronal cycle’s labour holiday. Each municipal page keeps the official date and source.
St Isidore the Farmer, patron of farmers.
When
In 2026 it falls on Monday 18 May in most municipalities.
| Year | Main date | Municipalities |
|---|---|---|
| 2026 | Monday, 18 May | 5 |
Where it's a holiday
Its local holiday in 2026, by region. Each municipality links to its annual record and the available official source.
Together, they account for 15,853 residents in the INE municipal register at 1 January 2025.
FAQ
In 2026, San Isidro festivals (weekday of the cycle) is mainly celebrated on 18 May 2026 (Monday). Some municipalities move it to another date on the working calendar.
It's a local holiday in 5 municipalities in 2026, accounting for 15,853 residents in the 2025 register; mostly in Andalucía (5 municipalities).
No. San Isidro festivals (weekday of the cycle) is a local-level holiday: it's only a non-working day in the municipalities that set it as their local festival; each keeps its official source.
Other holidays
Per-municipality data with its official source (regional gazette). Every date is verifiable on the municipality page. Data from festivos.io — CC BY 4.0.