A cold front currently in the south of China will affect northern Vietnam from Sunday, causing temperatures to drop below 20 degrees Celsius in mountainous areas along with possible heavy rains, Vietnam’s central weather agency warned.

The intense cold front will first hit mountainous localities this weekend before moving toward northern Vietnam’s midlands and delta region, the National Center for Hydro-meteorological Forecasting said on Wednesday.

This will be the first cold spell of the winter in northern Vietnam, the center said.      

The cold front may later continue moving south toward north-central provinces, said Nguyen Van Huong, head of the center’s Weather Forecasting Department.

Under the influence of the cold wave, many northern mountainous areas will see temperatures dip below 20 degrees Celsius on Sunday, a steep drop from the highs of 33 degrees forecast for Thursday in the northern region.

Lang Son Province, which borders China, will see thermostats move below 19 degrees Celsius on Sunday before nighttime temperatures drop to 14 -16 degrees from Monday to Friday next week. 

Daytime mercury in Lang Son Province will hover between 22 and 24 degrees Celsius.

Similarly, Cao Bang, another northern border province, will experience daytime highs of 25 degrees Celsius and nighttime lows of 17 degrees during the same period.

The capital city of Hanoi is forecast to have cloudy weather and rainstorms next Monday, with temperatures ranging from 21 to 25 degrees Celsius. Those will likely drop to 20-22 degrees just a few days later.

In Hai Phong City, temperatures will fall to 19 degrees Celsius early next week.

While being exposed to the cold spell next week, north-central Nghe An Province will see its temperatures plunge to 20 degrees Celsius.

The cold front will likely cause moderate to heavy rains in northern and north-central regions, along with powerful winds and rough seas in the middle and northern parts of the East Vietnam Sea, according to the center.

Whirlwinds, lightning, and strong gusts may occur during the torrential rains, it warned.

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