Illustrative photo of a cold and rainy day in Vietnam's northern region (photo: VOV)

The cold air wave will hit the northern highlands in the morning before sweeping across the north-eastern area in the afternoon and the north-central area in the evening.

It will send temperatures tumbling to 20-23 degrees Celsius in the plains and midlands and to 16-19 degrees Celsius in the highlands. The cold spell will bring heavy rain of up to 70mm to northern and mountainous localities.

Weather experts said in November, cold air waves continue to increase in frequency compared to October, but there is less chance of strong cold air waves causing the temperature to drop sharply. This year’s winter is anticipated to come late and be warmer than the average of previous years.