São Lourenço
Lisbon, Portugal: Excellent water quality
Sao Lourenco is 11.66 km from Mafra along Portugal's coast. The beach holds a Blue Flag award, meeting strict standards for water quality, environmental management, and safety. It's open during its designated season, though swimmers should take appropriate precautions. Drinking water is available on-site. May,…
Quick Overview
Plan Your Visit to São Lourenço
The key facts before you go
About the Beach
What is São Lourenço?
Sao Lourenco is 11.66 km from Mafra along Portugal's coast. The beach holds a Blue Flag award, meeting strict standards for water quality, environmental management, and safety. It's open during its designated season, though swimmers should take appropriate precautions.
Drinking water is available on-site. May, June, and September offer the best conditions, while July and August draw the most visitors. The Blue Flag certification means reliable water quality and proper beach management.
It sits alongside certified beaches along Lisbon, part of a broader network of certified beaches throughout Portugal certified annually by the Foundation for Environmental Education.
Sunrise, Sunset & Beach Direction
São Lourenço faces south toward Atlantic Ocean. The best light for photography and swimming is typically in May, June, September. Direct sun hours follow that facing.
Planning
When to Go: Month by Month
| Month | Air Temp | Water Temp | Crowds |
|---|---|---|---|
| Jan | 12°C | 15°C | Low |
| Feb | 13°C | 15°C | Low |
| Mar | 13°C | 15°C | Low |
| Apr | 14°C | 15°C | Low |
| May | 17°C | 17°C | Med |
| Jun | 18°C | 18°C | Med |
| Jul | 20°C | 19°C | High |
| Aug | 20°C | 20°C | High |
| Sep | 20°C | 20°C | Med |
| Oct | 18°C | 19°C | Low |
| Nov | 15°C | 18°C | Low |
| Dec | 14°C | 16°C | Low |
When is the best time to visit São Lourenço?
The best time to visit São Lourenço is May, June, September. Air temperatures peak around 19.5°C in summer. Peak water temperature reaches 19.2°C in July.
How crowded does São Lourenço get?
Like most Blue Flag beaches in Portugal, São Lourenço sees its highest visitor numbers in July and August. The beach maintains a pleasant atmosphere even in peak season.
Is São Lourenço open year-round?
The beach itself is accessible year-round, though staffed facilities including lifeguards typically operate only during the official season (typically July–September). The Blue Flag is displayed during the certification period only.
The Water
Swimming and Beach Life at São Lourenço
Is São Lourenço safe to swim?
São Lourenço is Blue Flag certified, which requires meeting strict bathing water standards set by the EU Bathing Water Directive. Water quality is rated Excellent.
What is the water temperature at São Lourenço?
Peak water temperature at São Lourenço reaches around 19.2°C in July, making it comfortable for swimming during the summer months. In winter (January), air temperatures average 11.9°C.
What is the beach like at São Lourenço?
São Lourenço on the Lisbon coast of Portugal. It meets all Blue Flag criteria for environmental management, water quality, safety, and facilities.
São Lourenço sits on the Atlantic Ocean: explore all Blue Flag beaches on the Atlantic.
Transport
Getting to São Lourenço
How do I get to São Lourenço by car?
São Lourenço is approximately 11.66 km from Mafra. Follow local road signs to the beach. Check Google Maps or a local map for the most current directions.
What is the nearest airport to São Lourenço?
The nearest airport is Lisbon Humberto Delgado Airport (LIS), approximately 35.7 km away.
Can I get to São Lourenço by public transport?
Public transport options vary by season. Check local transport authority websites for current bus and train schedules connecting to Mafra.
Map
Find São Lourenço
Open the map or get directions to the São Lourenço pin. Amenity names are listed here only when OpenStreetMap has a mapped feature nearby.
Map loads when you ask. Tiles stay off the first paint.
Map: OpenStreetMap (ODbL)
On the beach
Facilities at São Lourenço
- Lifeguards
- Yes
- Toilets
- Yes
- Showers
- Yes
- Parking
- 148 m away, no parking fee
- Surface
- Sand
These details can change. Check on arrival.
Map data © OpenStreetMap contributors
Practical Details
Practical Information
| At the Beach | |
| Official Season | June – October |
|---|---|
| Beach Type | Coastal beach |
| Visiting Information | |
| GPS Coordinates | 39.0126°N, 9.4217°W |
| Water Quality | Excellent (EU Bathing Water Directive) |
| Official Website | www.playocean.net/portugal/mafra/praias/praia-de-sao-lourenco |
| Blue Flag Operator | Foundation for Environmental Education (FEE), Portugal |
Frequently Asked Questions
São Lourenço FAQ
Is São Lourenço suitable for children?
São Lourenço is Blue Flag certified in Portugal, which requires meeting strict standards for water quality, safety, and facilities. Families should check current facility status with the local beach operator before visiting.
Is São Lourenço free to access?
An entry fee is not listed for São Lourenço. Check with the beach operator before you travel. It is a Blue Flag certified beach in Lisbon, Portugal, recognised for meeting international standards for water quality and environmental management.
When is the best time to visit São Lourenço?
The best time to visit São Lourenço is May, June, September. The peak season typically runs High season: July, August, when weather conditions and facilities are at their best.
Peak water temperature reaches around 19.2°C in July. Outside peak season, the beach is quieter but some facilities may be reduced.
What is the water quality at São Lourenço?
São Lourenço is Blue Flag certified, which requires meeting strict EU Bathing Water Directive standards. Water quality is rated Excellent.
Blue Flag certification is awarded and reviewed annually by the Foundation for Environmental Education (FEE). Beaches must pass water quality tests throughout the season to retain their status.
How do I get to São Lourenço?
São Lourenço is located in Lisbon, Portugal. It is approximately 11.66 km from Mafra. The nearest airport is Lisbon Humberto Delgado Airport (LIS), 35.7 km away.
By car is the most flexible option. Check local transport authority websites for current bus and train schedules to the area.
Editorial
From the Zeach Blog
Everything you need to know about what makes a beach qualify for Blue Flag status, from water quality to environmental education.
Read moreOur editorial team's pick of the standout Blue Flag beaches in Portugal, rated for family friendliness, scenery, and facilities.
What the flag actually means, how certification works, and why a Blue Flag is a genuinely reliable signal, not just a marketing tool.
Read moreSources
- Foundation for Environmental Education: Blue Flag programme
- FEE site listing for São Lourenço
- ABAE (Associação Bandeira Azul da Europa)
- European Environment Agency: bathing water quality
Last verified September 2026. National operator pages and FEE listings are the primary certification sources.