Hel, Poland offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Hel is known for its beautiful sandy beaches and vibrant summer tourism scene. The best time to travel to Hel, Poland, is during the summer months of June to August, when the average air temperature ranges from 18°C to 22°C (64°F to 72°F) and the Baltic Sea water temperature is around 17°C to 20°C (63°F to 68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!