Seria, Brunei offers 1 beach perfect for sunbathing, surfing, swimming, and more. Seria is known for its proximity to beautiful beaches and its role as a gateway to exploring the natural and cultural attractions of Brunei. The best time to travel to Seria, Brunei, is from February to April, with average air temperatures around 28°C (82°F) and water temperatures near 29°C (84°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!