Withernsea, United Kingdom offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Withernsea, England, United Kingdom, is known for its iconic Withernsea Lighthouse and the historic Pier Towers. The best time to travel to Withernsea, United Kingdom, is from June to August, when the average air temperature is around 18°C (64°F) and the water temperature is approximately 15°C (59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!