The strong cold wave affected the northeastern region of Vietnam early on February 23, before spreading to north-central, northwestern, and central regions, said meteorologists.

From the night of February 23, Northern Vietnam will experience severe cold, with some mountainous areas facing extreme cold conditions.

Temperatures will quickly fall to 10-13°C in the lowlands and 6-9°C in the highlands, with some high-altitude regions falling below 5°C.

In the capital city of Hanoi, temperatures will also drop quickly, ranging between 12-19°C, with cold weather accompanied by strong winds.

In the north-central region, the weather will be cold, with temperatures decreasing to 14-17°C.

Notably, due to the dry nature of this cold air mass, the prolonged humid conditions will end, bringing drier weather. This is good news for northern residents who have been dealing with damp and uncomfortable indoor conditions due to high humidity.

However, the humid weather will soon return as soon as this strong cold spell ends, and temperatures will rise quickly to 30°C. Experts say the large temperature difference between day and night may cause temperature inversion, leading to the return of air pollution, and the humid weather.

Periods of humid weather typically last 3-5 days, with some lasting up to a week. This phenomenon only ends or changes when a strong cold wave arrives.

Temperatures plunge as strong cold grips across northern localities

VOV.VN - Waves of intense cold continued to sweep over northern and north-central Vietnam on February 9, sending temperatures plunging to below 10°C or even 2°C.