Sources & Methodology
A transparent guide to the 769 beaches in Portugal: where the data comes from, how we classify each one and what you can trust when planning your visit.
Editorial standards (E-E-A-T)
We follow Google’s Experience, Expertise, Authoritativeness and Trustworthiness framework. In practice, that means:
Experience
Our editorial team visits representative beaches across every region and type (coastal, river, lake) throughout the year, empirically validating the information we publish — access, signage, amenities, real conditions — to spot discrepancies against the official datasets and flag them with the responsible authorities.
Expertise
We work directly with primary official sources (APA InfoÁgua, ABAAE Blue Flag, dados.gov.pt, POC). We understand each classification's technical criteria, the annual update cycle of each dataset, and known limitations — including beaches without sampling, bathing-zone changes and occasional Blue Flag revocations.
Authority
We are not an official authority — we are a transparent aggregator. Every data point is traceable back to a primary source, with a direct link. We do not publish opinions about water quality or safety: we limit ourselves to citing the most recent official classification and its reference year. For critical decisions (bathing with small children, sea conditions), we always recommend consulting the official source directly.
Trust
Update dates are visible on every page. Source links go straight to the original document at APA, ABAAE or dados.gov.pt. Anyone can report an error or correction via the contact page — every report is reviewed and answered. We do not run paid placements and beaches are not ordered by commercial criteria.
Data sources
All data is drawn from primary official sources. We do not republish third-party aggregations.
APA — Portuguese Environment Agency (InfoÁgua) ↗
Official annual classification of bathing-water quality. Microbiological samples (intestinal Enterococci and E. coli) collected throughout the bathing season, evaluated under the European Bathing Water Directive (Directive 2006/7/EC). Levels: Excellent, Good, Sufficient, Poor.
ABAAE — Blue Flag Association of Europe ↗
Annual Blue Flag certification, an international award by the FEE. The list is published every year for the upcoming bathing season and is reviewed mid-season for any changes (suspensions, revocations).
dados.gov.pt ↗
Portuguese open-data portal. Includes accessibility datasets ("Accessible Beaches"), classified bathing waters, signage and amenities, all from authoritative public bodies.
POC — Coastal Zone Programmes ↗
Coastal zone classifications: urban, peri-urban, semi-natural and natural. Used to classify the development context of each beach.