According to the weather forecast from the National Center for Hydro-Meteorological Forecasting, the increased cold air will significantly affect the weather in many areas across the country during Christmas.
In the past 24 hours, the North has had rain in some places, with common temperatures of 21-24 degrees Celsius. From the night of December 24, when the cold air strengthens, the weather will have a clear change, especially rain and cold in many localities.
From the night of December 24, cold air will affect the Northeast region, then spread to the Northwest and North Central regions. During this period, the North and North Central regions will have rain, showers, and thunderstorms in some places.
The temperature in the North and North Central regions will decrease rapidly, and the weather will turn cold from the night of December 24. Mountainous areas are likely to have severe cold, especially the Northeast mountainous areas on December 25 and 26. The lowest temperature in this cold air mass is generally 12-15 degrees Celsius, in the mountainous areas of the Northeast 10-13 degrees Celsius, in some places below 8 degrees Celsius.
Hanoi weather from the night of December 24 to December 25 has rain, showers; the weather turns cold with the lowest common temperature of 13-15 degrees Celsius.
Weather forecast for the Central region, from December 25, rain will tend to increase. The area from Quang Tri to Da Nang City and the east of the provinces from Quang Ngai to Dak Lak, Khanh Hoa are forecast to have rain, moderate rain, locally heavy rain and thunderstorms.
During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. From December 25, the north of the Central region will turn cold, and the night and early morning will feel clearly cold.
The remaining areas across the country are generally sunny during the day, with showers and thunderstorms in some places in the late afternoon and night.
In the South, the weather forecast from the evening of December 24 is that scattered showers and thunderstorms will appear, with some places having heavy rain, mainly concentrated in the late afternoon and evening. On the night of December 25, rain continued to appear everywhere in the South.
From the night of December 25, 2025 to early January 2026, the North, Thanh Hoa and Nghe An will maintain a cold state, with rain in some places; mountainous areas will have severe cold. The area from Ha Tinh to Da Nang City and the east of the provinces from Quang Ngai to Dak Lak, Khanh Hoa will continue to have scattered showers, especially during the night of December 25-26, there is a possibility of moderate rain, locally heavy rain and thunderstorms.
Localized heavy rains during Christmas can cause flooding in low-lying areas, urban areas, industrial parks; at the same time, there is a potential risk of flash floods on small rivers and streams and landslides in steep slopes.
