Cuckmere Haven Beach is generally not recommended for swimming due to strong currents, especially where the Cuckmere River meets the sea. The beach is primarily pebble and shingle, making entry and exit challenging. There are no lifeguards on duty, and the remote nature means help is not immediately at hand. While some may brave a dip, it's best enjoyed for its scenic beauty rather than for swimming. Always exercise extreme caution if entering the water and be aware of rapidly changing tides.

For stunning photography and to avoid crowds, the best times to visit Cuckmere Haven are early mornings or late afternoons, especially during the shoulder seasons (spring or autumn). The light during these times beautifully illuminates the Seven Sisters cliffs and the meandering river. Weekdays are generally quieter than weekends. While summer offers the best weather, it also brings more visitors. Cooler, clearer days outside of peak season can provide dramatic skies and a more solitary experience for capturing its iconic views.