San Ildefonso, Philippines offers 1 beach perfect for sunbathing, surfing, swimming, and more. San Ildefonso is known for its historical churches and vibrant local festivals. The best time to travel to San Ildefonso, Philippines, is from December to February, with average air temperatures around 25-28°C (77-82°F) and water temperatures near 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!