Agroal, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Agroal, Santarem, Portugal, is known for the Agroal Natural Park and its therapeutic thermal springs. The best time to travel to Agroal, Portugal, is from June to September, with average air temperatures around 75°F (24°C) and water temperatures around 68°F (20°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!