Costa de Gale, Portugal offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Costa de Gale, Setubal, Portugal, is known for its stunning Arrabida Natural Park and the picturesque Troia Peninsula. The best time to travel to Costa de Gale, Portugal, is from June to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!