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.

More Channel Island musicians to get funding for gigs
Daughter of L'Ecume II skipper and former Jersey Reds Captain join police force
Speed limits to be cut on 52 St Ouen roads
Experts identify aspects of Assisted Dying Law that raise issues
Deputy decries £280k unspent IVF funding despite demand
Aurigny promises average Guernsey-Jersey air fare will be £70 one way
Missing moggy survives Storm Goretti and returns home after five weeks
A Channel Islands success story to expands to Dubai