Light flooding of up to two metres was expected to hit rivers in the northern region of Viet Nam from May 24-26, while flash floods and landslides were likely in mountainous areas, according to the National Centre for Hydro-meteorological Forecasting.
Heavy rain is expected over the next few days, with temperatures ranging dramatically between 24 and 34 Celsius.
Ha Noi is forecast to be cloudy and rainy.
In the central region, the scorching heat they have been experiencing will continue, with temperatures in the provinces of Nghe An and Phu Yen set to hit highs of 37C in the next two days.
Those in the south can expect to enjoy dry, sunny days with rain at night, with lows between 25 and 28C and highs from 32 to 35C.
V.N.S