Swimming at Agger Tange requires significant caution due to its exposed position on a narrow sand spit. The Thyborøn Channel's currents can be powerful, and the North Sea side experiences strong waves and undertows. There are no lifeguards. Many visitors come for walking and nature-watching rather than swimming. If you do enter the water, stay close to shore, never swim alone, check weather and tide conditions, and keep children under constant supervision. The channel side may have calmer water but still poses current risks.

Visit between May and September for the mildest weather, though this beach is spectacular year-round for nature enthusiasts. Summer months offer warmest temperatures and opportunities to explore the spit's unique ecosystem. Spring and autumn bring migratory birds, making it excellent for birdwatching. Winter visits reward hardy travelers with dramatic storm-watching and solitude, but expect fierce winds and cold. Late afternoon and evening provide stunning sunset views across the dunes. Off-season visits guarantee fewer crowds and a wild, elemental experience.