Rustington, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Rustington is known for its proximity to the South Downs National Park and the historic Arundel Castle. The best time to travel to Rustington, United Kingdom, is from June to August, with average air temperatures around 18-22°C (64-72°F) and water temperatures around 16-18°C (61-64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!