Forecast of the time when the coldest air of this winter will cause severe cold

This year's cold air waves have been quite strong since the beginning of the season and have appeared quite frequently. According to Dr. Hoang Phuc Lam - Deputy Director of the National Center for Hydro-Meteorological Forecasting, Department of Hydro-Meteorology, around November 17, a strong cold air mass will affect our country, most likely the temperature in the North will drop sharply.

Forecasting the northeast monsoon trend, a representative of the meteorological agency said that usually, cold air is most active from December of the previous year to February of the following year.

"The temperature forecast for this winter in the northern provinces of our country is generally at the same level as the average of many years. The cold spells in the northern provinces of our country are likely to appear from the second half of December 2025 and increase in January and February 2026" - Mr. Lam commented.

According to the Deputy Director of the National Center for Hydro-Meteorological Forecasting, during the above period, there may be some severe cold spells not only in the mountainous areas of the North but also in the Northern Delta and the North Central provinces (Thanh Hoa, Nghe An and Ha Tinh).

"During the cold spells, there is a possibility of frost, ice and snow on high mountain peaks in the northern mountainous provinces such as Lao Cai and Lang Son" - Mr. Lam warned.

According to Dr. Truong Ba Kien - Deputy Director of the Center for Meteorological and Climate Research, Institute of Meteorology, Hydrology and Climate Change, currently, atmospheric and ocean conditions reflect ENSO being in La Nina state.

"This winter starts at the average time of many years, but the intensity of the monsoon is stronger than the average of many years and the average temperature is forecast to be lower than the winter of 2024" - Dr. Truong Ba Kien analyzed.

According to the meteorologist, it is noteworthy that the intensity of cold air may be stronger and last longer, especially in the period from December 2025 to January 2026, when La Nina peaks.

"The number of cold air waves flooding into Vietnam may be higher, some of which are likely to cause severe cold in the North" - Mr. Kien said.

The meteorological researcher emphasized that due to the influence of La Nina, it is necessary to closely monitor unseasonal rain in the Central region.

"La Nina also increases the northeast monsoon, causing drizzle and moist fog in the North and North Central regions to appear early and persistently in the first half of the 2026 spring" - Mr. Kien said.