Lake
Embalse San Juan San Martín De Valdeiglesias
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Check out this spot in San Martín de Valdeiglesias. Great location for swimming and paddling, cycling, kayaking, canoeing, sailing, supping and wind surfing. San Martín de Valdeiglesias is a municipality located in the southwest of the Community of Madrid. The area is characterized by its beautiful natural surroundings, with the San Juan Reservoir and the Sierra de Gredos mountain range being the main attractions. The reservoir offers many opportunities for water sports and outdoor activities, while the mountains provide excellent hiking and climbing opportunities. The town itself is a mix of traditional and modern architecture, with historic buildings and charming streets, as well as new developments and shopping centers. Overall, San Martín de Valdeiglesias offers a great blend of natural beauty and modern convenience for visitors and residents alike.
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Plan your swim
Before you go
- Cold water shock is real. Enter slowly and control your breathing.
- Lake water can be much colder below the surface (thermocline)
- Stay close to shore until you know the conditions
- Watch for boat traffic and stay visible with a tow float
- Check for blue-green algae warnings before swimming
Conditions change fast. Always check the latest data, read recent community reports, and swim within your ability.
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Frequently asked questions
Is this lake safe for swimming?
Check the Conditions tab for surface state and wind conditions. Review the Quality tab if this is a designated bathing water. Always read recent community reports for local advice.
How cold is the water?
Check the Temperature tab for the current estimate and 7-day trend. Lakes hold heat longer than rivers but can develop a thermocline. The water below the surface can be dramatically colder.
What should I bring?
A tow float for visibility (especially important where boats operate), warm layers for after, and consider a wetsuit in colder months. Check for designated swimming areas.