Santo Andre, Portugal offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Santo Andre, Setubal, Portugal, is known for the Santo Andre Lagoon and the nearby Sines Beach. The best time to travel to Santo Andre, Portugal, is from June to September, when the average air temperature is around 70-80°F (21-27°C) and the water temperature is approximately 66-72°F (19-22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!