Onderdijk, Netherlands offers 1 beach perfect for sunbathing, surfing, swimming, and more. Onderdijk is known for its proximity to the IJsselmeer, a popular destination for water sports and scenic views. The best time to travel to Onderdijk, Netherlands, is from June to August, with average air temperatures around 18-22°C (64-72°F) and water temperatures around 17-20°C (63-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!