Dumangas, Philippines offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Dumangas is known for the Dumangas Church and the annual Haw-as Festival. The best time to travel to Dumangas, Philippines, is from December to May, with average air temperatures around 27-30°C (81-86°F) and water temperatures approximately 28-30°C (82-86°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!