The Blue Flag is one of the most widely recognised environmental certifications in the world, awarded to beaches, marinas and sustainable tourism boats. In Portugal, the programme is managed by ABAAE (Blue Flag Association of Europe).
How the programme works
The Blue Flag is awarded annually after a strict assessment across four categories:
1. Bathing-water quality
The most important criterion. The water must meet the parameters of the European Bathing Water Directive (2006/7/EC), with at least a "Good" classification. Beaches rated "Poor" cannot be certified.
2. Information and environmental education
The beach must display up-to-date information on:
- Water quality (updated regularly throughout the bathing season)
- Local fauna and flora
- Blue Flag identification sign
3. Environmental management
- Ban on camping and vehicles on the sand
- Adequate waste management (recycling available)
- No sewage or industrial discharges
- Coastal management plan in place
4. Safety and services
- Lifeguard required during the bathing season
- First-aid kit
- Access for people with reduced mobility (a growing requirement)
- Toilet facilities
Portugal and the Blue Flag
Portugal is among the countries with the most Blue Flag beaches in the world. In 2025:
- 354 coastal beaches held the Blue Flag
- 50 inland beaches (river and lake) held the Blue Flag
- Total: 404 certified beaches
The Algarve leads with more than 60 certified beaches, followed by Lisbon and the Tagus Valley with around 40.
How to check whether a beach has a Blue Flag
The most reliable check is on the official ABAAE site (bandeiraazul.abaae.pt) or through our directory, which states for each beach whether it holds the certification and the year it was awarded.
The flag is also physically raised at the beach throughout the bathing season — the clearest visible sign that the beach meets every requirement.
The Blue Flag is not a guarantee of everything
It is important to be clear that the Blue Flag certifies a set of criteria, but should not be confused with:
- Aesthetic quality: A beach can be beautiful without holding a Blue Flag, and vice versa.
- Absolute safety: Even though a lifeguard is required, accidents still happen.
- Absence of jellyfish or algae: These are natural occurrences and unrelated to the certification.
The Blue Flag is, however, an excellent guide for families looking for beaches with guaranteed infrastructure, safety and water quality.
