Lifeboat crews were dispatched to rescue eight people in trouble on sandbanks off Hunstanton.
For the second day in succession Humber Coastguard requested Hunstanton RNLI volunteers to go to their aid.
A spokesman for the RNLI said: “Humber Coastguard received a 999 call at 5.03pm yesterday (July 4) that several people were out on the sandbanks, as the tide was starting to turn, they were in danger of the strong tide that rips round the banks.
“Our hovercraft was tasked to the area and brought ashore eight persons in total including two children under the age of nine, they were landed into the care of the local coastguard team.”
The day before two teenagers were reported to be in trouble in the same area, but managed to get ashore before the lifeboat reached the scene.
The spokesman added: “Visitors to the area should not, however tempting the sands look, venture out on to the banks,
“These big tides go out a long way and expose vast sand banks, but what goes out must come back and it does not waste time, and creates very strong tidal currents.
“Our advice is stay safe, keep on the beach, enjoy your holiday.”