Showers, with rainfall of up to 100mm, are forecast to hit Hà Nội and other northern provinces on Tuesday afternoon, ending the prolonged heat wave in the region.
Prolonged rains have flooded many streets in Vinh City and caused traffic chaos.
Torrential rains and flooding across central Việt Nam has killed six people while another 10 remain missing.
Prime Minister Nguyễn Xuân Phúc has asked central localities and natural disaster prevention and response forces as well as the whole community to focus on overcoming consequences of recent flooding, and ensuring safety for students as the new academic year has started.
At least four people have been killed and eight others remain missing in central localities after torrential rains brought by a tropical depression have stricken the region over the past few days.