The National Center for Hydro-Meteorological Forecasting has issued a forecast of notable weather trends in the next month (ie from now until December 20).
1 - 2 storms, tropical depressions may affect the mainland
Accordingly, during the forecast period (from now until December 20), there is a possibility of 1-2 storms/tropical depressions appearing in the East Sea area and may affect the mainland of Vietnam.
According to the average data of many years, during the above period, there will be about 1.2 storms or tropical depressions in the East Sea, 0.4 of which will make landfall in Vietnam.
Previously, in the past month, there were 3 storms and 1 tropical depression in the East Sea. Of which, storm No. 12 Fengshen and storm No. 13 Kalmaegi directly affect our mainland.
Regarding temperature trends, from now until December 20, the average temperature in the Northern region, provinces/cities from Thanh Hoa to Da Nang and the east of Quang Ngai province will generally be 0.5 - 1.5 degrees Celsius lower than the average of many years. Other areas have commonly low temperatures of about 0.5 degrees Celsius compared to the average of many years in the same period.
The cold air continues to tend to increase in frequency and intensity over the next month.
In early December, there is still a risk of heavy rain in the Central region
Data analyzed by the meteorological agency also shows that the total rainfall in the Northern region and the provinces from Thanh Hoa to Da Nang is generally lower than the average of many years. Specifically, the total rainfall in the Northern region and Thanh Hoa - Northern Nghe An is generally at 15 - 30mm (lower than the average of many years by about 10 - 20mm).
Total rainfall in the provinces from South Nghe An to Quang Tri is generally from 100 - 200mm and from Hue - Da Nang is generally from 200 - 400mm (lower than the average of many years by 50 - 150mm). Other areas are generally at a level close to the average of many years in the same period with total rainfall generally 50 - 100mm, some places higher; in the east of the provinces from Quang Ngai to Dac Lak and Khanh Hoa, the total rainfall is generally 250 - 500mm, some places over 600mm.
Provinces/cities from South Quang Tri to Da Nang, the east of Quang Ngai province to Dak Lak and Khanh Hoa during the forecast period are likely to experience widespread heavy rains concentrated in late November and early December.
The Central and Southern Plateau are likely to experience showers and thunderstorms, concentrated in late November 2025.
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.
