Den Helder, Netherlands offers 6 beaches perfect for sunbathing, surfing, swimming, and more. Den Helder is known for the Royal Netherlands Navy, the Naval Museum, and the Texel ferry service. The best time to travel to Den Helder, Netherlands, is from June to August, with average air temperatures around 18°C (64°F) and water temperatures around 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!