The new cold wave will first affect north-eastern provinces late on January 15 before spreading to the north-western and north-central regions the following day.
The lowest temperatures will range from 12-15C and 8-11C in mountainous areas, with the mercury falling below 8C in the higher mountains.
Rains are expected over the next two days in Hanoi, with the highest temperatures rising to 20C and above on Friday.
