Macao, Portugal offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Macao, Santarem, Portugal, is known for the Church of Santa Maria de Marvao and its scenic views of the Tagus River. The best time to travel to Macao, Portugal, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures near 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!