IJmuiden, Netherlands offers 5 beaches perfect for sunbathing, surfing, swimming, and more. IJmuiden is known for its large seaport and the nearby National Park Zuid-Kennemerland. The best time to travel to IJmuiden, Netherlands, is from June to August, when the average air temperature is around 18°C (64°F) and the North Sea water temperature is approximately 17°C (63°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!