The National Center for Hydro-Meteorological Forecasting has issued a forecast of notable weather trends in December.
Number of storms and tropical depressions is approximately equal to or higher than average
According to Mr. Nguyen Duc Hoa - Deputy Head of Climate Forecasting Department, National Center for Hydro-Meteorological Forecasting, currently, the ocean atmospheric conditions are in La Nina state.
It is forecasted that in the next three months, the La Nina state is likely to continue to exist with a probability of 50 - 60%, while the probability of being neutral is from 40 - 50%.
The meteorological agency forecasts that during the December period, there is a possibility of 1-2 storms/tropical depressions appearing in the East Sea.
According to the average data of many years, during the above period, there will be about 1 storm or tropical depression in the East Sea, 0.2 of which will make landfall in Vietnam.
Previously, in November, there were 3 storms and 1 tropical depression in the East Sea. Of which, storm No. 13 directly affected our mainland.
Regarding temperature trends, in December, the average temperature in most areas across the country will be approximately the same as the average of many years in the same period.
During this period, cold air continues to increase in frequency and intensity and may experience severe cold concentrated in the mountainous areas of the north of our country.
In the first half of December, the Central region still faces the risk of heavy rain
Data analyzed by the meteorological agency also shows that in December 2025, the total rainfall in the Northern regions, Thanh Hoa and northern Nghe An will generally be from 10 - 25mm, 10 - 20mm lower than the average of many years.
The area from southern Nghe An to northern Quang Tri is generally 30-80mm, 30 - 50mm lower than the average of many years. The provinces/cities from southern Quang Tri to Da Nang city, coastal provinces from Quang Ngai to Dak Lak and northern Khanh Hoa will have rain from 250 - 450mm, some places over 550mm (commonly 15 - 40mm higher than the average of many years in the same period).
The Central Highlands region has a total rainfall of 30 - 60mm, in the north, some places are lower, generally 5 - 15mm higher than the average of many years in the same period. The common Southern provinces have total rainfall from 40 - 80mm, commonly approximately the same as the average of many years in the same period.
According to Mr. Hoa, in the provinces/cities from Quang Tri to Da Nang, the east of Quang Ngai province to Dak Lak and Khanh Hoa, there is a possibility of widespread heavy rains (concentrated in the first half of December).
On a national scale, there is a continued possibility of dangerous weather phenomena such as thunderstorms, whirlwinds, lightning, hail and strong gusts of wind.
In the last months of the year, storms, tropical depressions and cold air can cause strong winds, large waves at sea and affect the activities of ships and boats. In particular, beware of heavy rain that can cause flooding, inundation in low-lying areas and landslides in mountainous areas.
In the context of climate change, weather and climate are becoming increasingly complex with many dangerous and extreme forms such as short-term heavy rain, flash floods, landslides, etc.
Therefore, it is recommended that authorities at all levels and people regularly update and integrate hydrometeorological forecast and warning information in short-term bulletins of 1-3 days, to promptly adjust production plans and appropriate response plans, especially appropriate reservoir operation plans, ensure the safety of works and downstream areas, along with ensuring safety for production and people's lives.
