Vu Anh Tuan, deputy head of the weather forecasting department at the National Center for Hydrometeorological Forecasting (NCHF), said it would be caused by a strong cold air mass.

A corner of Sa Pa City is rainy and foggy in January 2021.

American weather site AccuWeather forecast temperatures in Hanoi to be 19-27 degrees from now until Friday.

It expected them to drop to 14-15 degrees on Jan. 21, and to 14-15 degrees during the day and 9-10 degrees at night the following week.

At places 1,500 meters above sea level, such as Sa Pa City, temperatures next week are expected to be 10-16 degrees during the day.

The NCHF said from now until the Lunar New Year in early February cold weather would be frequent. But the average temperatures across the country would be 1-2 degrees higher than normal, it added.

Northern Vietnam's cold wave to persist until Christmas

An additional mass of cold air arriving Tuesday morning will further plunge northern Vietnam into the cold until Christmas, with average daytime temperatures below 15 degrees Celsius.

Northern Vietnam experiences 1°C coldness

A strong cold air has brought the temperature at the northern province of Lang Son’s Mau Son peak on Sunday down to 1°C, with Hanoi at 11°C, the lowest since this year’s winter started.

North to become colder with intensifying northeast monsoon

The northeast monsoon is forecast to arrive this weekend, and it will cause temperatures in Hanoi to drop to 10-13 degrees Celsius.

Cold wave coming for northern Vietnam

A cold wave will arrive in the northern on Thursday and plunge temperatures down to below 10 degrees Celsius in mountainous areas, and 16-19 degrees in the plains.

Strong cold spell to come for northern Vietnam

A strong cold spell would barrel down northern Vietnam regions Sunday night, plunging temperatures in Hanoi down to 16-20 degrees Celsius.

Source: VnExpress