San Agustin, Philippines offers 17 beaches perfect for sunbathing, surfing, swimming, and more. San Agustin, Caraga, Philippines, is known for Britania Group of Islands, a stunning collection of 24 islets with pristine beaches and crystal-clear waters. The best time to travel to San Agustin, 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!