Union, Philippines offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Union, Western Visayas, Philippines, is known for its proximity to the stunning Boracay Island. The best time to travel to Union, Philippines, is from December to April, 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!