Dimasalansan, Philippines offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dimasalansan, Cagayan Valley, Philippines, is known for its proximity to the Callao Cave, a popular tourist attraction featuring stunning limestone formations and historical significance. The best time to travel to Dimasalansan, Philippines, is from December to May, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!