Oostende, Belgium offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Oostende is known for its Atlantic Wall Open Air Museum and the James Ensor House. The best time to travel to Oostende, Belgium, is from June to August, with average air temperatures around 18-22°C (64-72°F) and water temperatures around 17-19°C (63-66°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!