Divilacan, Philippines offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Divilacan, Cagayan Valley, Philippines, is known for the Northern Sierra Madre Natural Park. The best time to travel to Divilacan, Philippines, is from March to May, when the average air temperature is around 28°C (82°F) and the water temperature is approximately 27°C (81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!