Nieuwvliet, Netherlands offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Nieuwvliet is known for its beautiful beaches and proximity to the Zwin Nature Park. The best time to travel to Nieuwvliet, Netherlands, is from June to August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!