According to the National Center for Hydro-Meteorological Forecasting, from the afternoon and night of March 28, cold air is expected to affect the Northeast, North Central and some places in the Northwest, then spread to other places in the Northwest and some places in the Central Central.
The wind is forecast to gradually strengthen to level 2-3, and level 3-4 in coastal areas. The weather in the North and North Central regions will turn cold, with some mountainous areas experiencing severe cold. The temperature in the North will decrease to 15-18 degrees Celsius, in high mountainous areas it will be below 13 degrees Celsius. In the North Central region, it will be 17-19 degrees Celsius.
Hanoi's temperature dropped to its lowest level of 16-18 degrees Celsius. Cloudy, with rain in some places. Air humidity 87%.

The cold air will affect the Northern and North Central regions until the end of next week. Hanoi temperature ranges from 17-22 degrees Celsius, cloudy sky, rain in some places. By the end of next week (May 4-5), the temperature will gradually increase, and the weather will be sunny.
It is forecasted that from the afternoon of March 28, the Gulf of Tonkin will have northeast winds at level 6, gusting to level 7-8, rough seas, waves 2.0-3.0m high. The sea area north of the North East Sea will have strong northeast winds of level 6-7, gusting to level 8, rough seas, waves 3.0-5.0m high.
From the night of March 28, the mountainous areas of the North and North Central regions will have scattered showers and thunderstorms in some places. Warning of the risk of tornadoes, lightning, hail, strong gusts of wind.
Due to the influence of cold air, people and tourists to the North and North Central regions should pay attention to wearing warm clothes. Don't forget to bring umbrellas and raincoats to prevent sudden changes in weather.