Seahouses Inshore Lifeboat were scrambled to the aid of the driver, who had made it to the refuge box at Holy Island at 1.39pm on Saturday, March 13
The man was brought ashore by lifeboat and arrangements were made to recover his vehicle at low tide.
Coastguards said high tide at Holy Island was 2.56pm and would completely cover the causeway.
A spokesperson said: “The vehicle had attempted to cross contrary to the safe crossing times displayed at either sides of the causeway.
“Due to the cold and the anticipated big tide, it was considered necessary to evacuate the casualty to safety.
"Once safely brought ashore by the lifeboat, he was handed into the care of local coastguard officers on the mainland end of the causeway.
"Arrangements were made to recover his vehicle when the tide receded.”