Two people had to be rescued by the Fire Service's inshore lifeboat after being cut off by the tide near Seymour Tower.
It happened at around 4pm on Sunday afternoon.
Two others from the group managed to make it back to land without needing assistance.
Jersey Fire and Rescue has reminded everyone to check the tide times before walking along Jersey's coastline.

Commonwealth Games: Nowacki into 100m breaststroke final
Channel Islands face 'physical' Poland test
Thousands expected at Havre Des Pas Festival this weekend
Price of heating oil and other fuel increase by more than half in a year
Man jailed for importing nearly £600k worth of cannabis in bumpers of his car
Baby born on Guernsey's Marine Ambulance
Drug trafficker who claimed he was the ‘Accredited Dealer' jailed
Jersey men involved in cocaine importation sentenced