Chamusca, Portugal offers 1 beach perfect for sunbathing, surfing, swimming, and more. Chamusca, Santarem, Portugal, is known for its annual Festa da Ascensao, a traditional festival featuring bullfighting and cultural events. The best time to travel to Chamusca, Portugal, is in late spring or early fall when the average air temperature is around 20-25°C (68-77°F) and the Tagus River water temperature is approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!