Best lakes around Santiago Do Cacém are situated within a region known for its significant natural areas, including the Natural Reserve of the Lagoons of Santo André and Sancha. This coastal area in Portugal features diverse aquatic ecosystems, ranging from large coastal lagoons to man-made reservoirs. The landscape offers a mix of fresh and brackish waters, supporting varied flora and fauna, and providing opportunities for outdoor activities.
Last updated: May 13, 2026
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The Morgavel Dam is a huge mirror of water in the heart of the Alentejo, perfect for rolling along without haste. The paved crest invites you to cycle with open views, while, all around, dirt roads stretch out, ideal for exploring the area.
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It is possible to visit the lagoon from the north or south shore. In the first case, there are higher observation points, which allow for a wider view, especially at the far end; the second option may be more advantageous on sunny days, as the light will be more favourable. Whichever route you choose, you can follow the path to the beach and start observing the beach inland. On the north side, the best observation point is right at the end of the path – there is a small hill there, which allows a good view of the lagoon and the beach. On the south side, there is a dirt track that ends in a small car park, which also provides easy access to the lagoon. In the lagoon itself, it is common to see mallards, little egrets, grey herons, cormorants and, occasionally, marsh harriers and common terns. During the nesting season, the purple heron is also present – this species often hides among the reeds, making it easier to see when it takes flight. There are other birds that frequent the reeds and, although frequent, are easier to hear than to see – such as the moorhen, the nightingale and, during the nesting season, the reed warbler. The Moinhos stream also attracts some birds that feed in flight, such as the black swift and the sand martin, which are regularly seen here in spring. The surrounding lands are home to several passerines, such as the reed martin, the linnet and the corn bunting. Sometimes, small flocks of waxbills appear. On the beach it is common to see large flocks of seagulls resting, while in the sea gannets can be seen fishing, sometimes at a short distance. The Kentish plover can also be seen regularly on the beach or in the adjacent dunes. Another species that lives in the dunes is the mountain lark. ( avesdeportugal.info )
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Near Sines, the mouth of the Moinhos stream forms a small lagoon; this wetland is one of the least known on the Portuguese coast; however, the extensive emergent vegetation makes this place an interesting refuge for water birds.
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Beautiful, fine beach, no catering open in March 2025.
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Rustic beach bar with a great view of the Atlantic surf from the deckchair, feet in the sand, a cold beer in your hand - what more could you want?
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Nature reserve with a beautiful beach, lagoon and beach bar, not overcrowded.
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Very nice long beach (and some up to 200 meters wide) with a lagoon and beach bar. Immediately behind it is the Lagos de Santo André e Sancha, a nature reserve.
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Completed in 1954, the large Campilhas dam lake can be used to produce electricity, supply drinking water and maintain an irrigation network. Due to repeated droughts, the lake can no longer recover the levels of its creation.
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The region is a haven for birdwatchers. The Santo André and Sancha Lagoons Nature Reserve, encompassing both Lagoa de Santo André and Lagoa da Sancha, is particularly renowned. Lagoa de Santo André is a crucial wetland for species like the common coot and red-crested pochard, while Lagoa da Sancha hosts a nesting colony of purple herons. The Ribeira de Moinhos Lagoon is also an excellent spot, with extensive emergent vegetation providing refuge for water birds such as mallards, little egrets, and grey herons.
Yes, several lakes are great for families. The Costa de Santo André Beach area, with its adjacent lake, offers opportunities for swimming and wildlife discovery. The Ribeira de Moinhos Lagoon and the Santo André and Sancha Lagoons Nature Reserve are also categorized as family-friendly, providing serene landscapes and nature observation. Additionally, the Malhão Mediterranean temporary pond features a short, informative walking path suitable for all ages.
The lakes around Santiago do Cacém offer diverse outdoor activities. You can enjoy hiking, canoeing, and windsurfing at Lagoa de Santo André. For cycling enthusiasts, there are numerous routes available, including MTB trails, gravel biking routes, and general cycling tours that explore the scenic landscapes around the lakes.
Yes, there are excellent walking opportunities. A pedestrian trail approximately 3.6 km long circles Lagoa da Sancha, offering tranquil views of the landscape, ocean, and dunes. The Malhão Mediterranean temporary pond also features a short, informative walking path on decking. Many visitors also enjoy hiking the hinterland around Lagoa de Santo André.
For optimal birdwatching, visiting from late summer to early autumn is highly recommended. During this period, many birds take refuge in the wetlands of Lagoa de Santo André as other areas dry out, making it an excellent time to observe a wide variety of species.
Yes, the Costa de Santo André Beach is an ideal place for swimming, offering both the coastal beach experience and the calm waters of the adjacent lake. It's a popular spot for visitors looking to relax by the water.
The Campilhas Reservoir is a significant man-made lake completed in 1954. It plays a crucial role in the region by producing electricity, supplying drinking water, and maintaining an irrigation network. While its water levels can fluctuate due to droughts, it remains an important infrastructure and a notable feature of the landscape.
The Santo André and Sancha Lagoons Nature Reserve is a protected area of high ecological value in the Santiago do Cacém region. It encompasses the Lagoa de Santo André and Lagoa da Sancha, preserving their diverse aquatic ecosystems, including marshes, willow plantations, and extensive reed beds. The reserve is vital for bird reproduction, wintering, and migration, offering rich biodiversity and beautiful natural landscapes.
The Ribeira de Moinhos Lagoon is considered one of the least known wetlands on the Portuguese coast. Formed by the mouth of the Moinhos stream, its extensive emergent vegetation makes it an interesting refuge for water birds and a tranquil spot for nature observation away from larger crowds.
The lakes are rich in wildlife, especially birds. You can spot species like the common coot, red-crested pochard, Eurasian reed warbler, and purple herons. Other common sightings include mallards, little egrets, grey herons, cormorants, and sometimes marsh harriers and common terns. The surrounding areas also host passerines like the linnet and corn bunting, and gannets can be seen fishing offshore.
Near the Costa de Santo André Beach, you can find amenities such as cafes, pubs, and restaurants, especially during the peak season. These facilities provide convenient options for refreshments and meals after enjoying the lake and beach.


Still not found your perfect lake around Santiago Do Cacém? Check out the guides of these regions to see even more beautiful places.