Leiston, United Kingdom offers 1 beach perfect for sunbathing, surfing, swimming, and more. Leiston is known for the historic Leiston Abbey and its proximity to the scenic Suffolk Coast. The best time to travel to Leiston, United Kingdom, is from June to August, when the average air temperature is around 18°C (64°F) and the North Sea water temperature is approximately 16°C (61°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!