Datasets
What we computed from state sources and published as files. Any use, commercial included, provided the source is credited with a link.
Winter openness of coastal towns
How much of a town runs in January against its own yearly peak — 132 places, from monthly Seguridad Social records for 2025.
Bathing water quality, 1990–2025
Water quality class for every beach across 36 seasons, tied to the town rather than the province.
What the people already renting pay
Median rent under live tenancies from 2024 tax records — not the asking price.
Monthly sea temperature, place by place
The 2015–2024 monthly water normal for each of 132 places — from NOAA's daily grid, not one figure per coast.
Who is registered, by nationality
The municipal register on 1 January 2025: how many people of each nationality are recorded in every coastal municipality.
How much housing sits empty
The share of housing that is not a main home and the share standing empty by electricity meter — the 2021 census. Tourist flats and income alongside.
Each dataset has a page with its method, its validation and a machine-readable file. The method is published with the numbers for a reason: a figure whose derivation is unknown cannot be checked, and what cannot be checked cannot be cited.