According to the National Center for Hydro-Meteorological Forecasting, the cold air will weaken and change, around March 11-12, a low pressure trough will form, then gradually be compressed and filled by the cold air in the North. Around March 15-16, the cold air may strengthen.
In the Northeast, there will be light rain, scattered drizzle and fog at night and in the morning; cold weather, from March 12 it will be cold, about March 15 it will turn cold. The Central and South Central regions will have scattered showers and thunderstorms; the North will be cold at night and in the morning, from March 12.
The Central Highlands and the South will have showers and thunderstorms in some places in the evening and at night; sunny during the day, the South will have hot weather in some places.
People and tourists need to be on guard against thunderstorms that can cause tornadoes, lightning, hail, and strong gusts of wind.

Hanoi
Lowest temperature: 19-21 degrees Celsius Highest temperature: 24-26 degrees Celsius
Cloudy, light rain, drizzle and scattered fog at night and morning. Light wind. Cold at night and morning.
Northwest
Lowest temperature: 18-21 degrees Celsius, some places below 18 degrees Celsius Highest temperature: 24-27 degrees Celsius, some places in the Northwest region 30-32 degrees Celsius
Cloudy, with rain in some places, fog and light fog scattered in the early morning, sunny in the afternoon. Light wind. Cold at night and morning.
Northeast
Lowest temperature: 18-21 degrees Celsius Highest temperature: 23-26 degrees Celsius
Cloudy, light rain, drizzle and scattered fog at night and morning. Light wind. Cold at night and morning.
Thanh Hoa to Hue
Lowest temperature: 19-22 degrees Celsius Highest temperature: 23-26 degrees Celsius
Cloudy, with rain in some places, early morning fog and light fog scattered; in the late afternoon, there will be rain, scattered showers and thunderstorms in some places. Light wind. Cold at night and morning.
Da Nang to Binh Thuan
Lowest temperature: 23-26 degrees Celsius Highest temperature: 25-28 degrees Celsius; South 30-32 degrees Celsius
Cloudy, scattered showers. Northeast wind level 2-3.
Central Highlands
Lowest temperature: 19-22 degrees Celsius Highest temperature: 29-32 degrees Celsius, some places above 32 degrees Celsius
Cloudy, showers and thunderstorms in some places in the evening and at night, sunny during the day. Northeast to east wind level 2-3. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Southern region
Lowest temperature: 23-26 degrees Celsius Highest temperature: 32-35 degrees Celsius, some places above 35 degrees Celsius
Cloudy, showers and thunderstorms in some places in the evening and at night, sunny during the day, some places have hot sunshine. Northeast to east wind level 2-3. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.