It will first affect the northeast region by Monday evening, followed by the Red River Delta and the northwest areas, according to the National Center for Hydro-Meteorological Forecasting.

Hanoi residents dress for the cold weather, January 2024.

The northern region is expected to see scattered rain and level 3-5 winds, which correspond to speeds of 12-38 kph, on Monday and Tuesday.

U.S.-based weather forecasting service Accuweather predicts that Hanoi's temperature will drop to 16-19 degrees on Tuesday. Temperatures are expected to fall further to 14 degrees at nighttime and 20-24 degrees during daytime in the days after that.

In high-altitude areas above 1,500 meters, such as Lao Cai’s Sa Pa, temperatures will plummet to severe cold levels starting on Wednesday, averaging below 13 degrees during the day and 8-11 degrees at night.

The strong cold air mass will spread to central Vietnam from Tuesday, bringing temperatures there to 16-18 degrees. Rainstorms are expected, along with risks of whirlwinds, lightning, and strong gusts.

Starting from the evening of Monday, the Gulf of Tonkin will experience strong winds with speeds of 39-61 kph and waves reaching 2-3.5 meters.

By Tuesday afternoon, coastal areas from Quang Tri to Quang Ngai provinces will see level 6 winds, which have speeds of 39-49 kph and waves rising to 2-4 meters.

The hydro-meteorological center predicts that strong cold spells will persist from December to next February. Frost and ice are likely to appear in the northern mountainous regions.

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