According to the National Center for Hydro-Meteorological Forecasting, the weather today May 21, Hanoi area is cloudy, sometimes with showers and thunderstorms, locally heavy rain. Highest temperature from 30-32 degrees C.
Meanwhile, the area of Ho Chi Minh City is cloudy, sometimes with showers and thunderstorms, locally heavy rain. The highest temperature is from 31-33 degrees C.
The area from Thanh Hoa to Hue in the North is cloudy, with scattered showers and thunderstorms during the day, locally heavy rain in some places; moderate rain, heavy rain and thunderstorms at night, locally very heavy rain in some places. The South and South Central Coast are cloudy, sunny during the day, with hot sun in some places; showers and thunderstorms in some places in the evening and at night. The highest temperature is from 32-35 degrees C, in some places above 35 degrees C.
Other areas will be cloudy, with showers and thunderstorms in some places; especially in the late afternoon and evening, there will be scattered showers and thunderstorms.
People and tourists going out should bring umbrellas and raincoats to prevent sudden weather changes. In thunderstorms, it is necessary to prevent the possibility of tornadoes, lightning and strong gusts of wind.

Weather forecast today May 21st nationwide:
Hanoi City
Lowest temperature: 25-27 degrees C.
Highest temperature: 30-32 degrees C.
Cloudy, sometimes showers and thunderstorms, locally heavy rain.Southeast wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Northwest
Lowest temperature: 23-26 degrees C, in some places below 23 degrees C.
Highest temperature: 31-34 degrees C, in some places above 34 degrees C.
Cloudy, scattered showers and thunderstorms, locally heavy to very heavy rain.Light wind.In thunderstorms, beware of tornadoes, lightning, hail and strong gusts of wind.
Northeast
Lowest temperature: 24-27 degrees C, mountainous areas in some places below 24 degrees C.
Highest temperature: 30-33 degrees C.
Cloudy, scattered showers and thunderstorms during the day, locally heavy rain; moderate rain, heavy rain and thunderstorms at night, locally very heavy rain.Southeast wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Thanh Hoa to Hue
Lowest temperature: 25-28 degrees C.
Highest temperature: 32-35 degrees C, in the South some places above 35 degrees C.
The North is cloudy, scattered showers and thunderstorms during the day, locally heavy rain; moderate rain, heavy rain and thunderstorms at night, locally very heavy rain.The South is cloudy, sunny during the day, hot in some places; showers and thunderstorms in some places in the late afternoon and night.South to southeast wind level 2-3.In thunderstorms, beware of tornadoes, lightning, hail and strong gusts of wind.
South Central Coast
Lowest temperature: 25-28 degrees C.
Highest temperature: 32-35 degrees C, in some places above 35 degrees C.
Cloudy, sunny during the day, hot in some places; showers and thunderstorms in some places in the evening and at night.South to southeast wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Central Highlands
Lowest temperature: 21-24 degrees C.
Highest temperature: 29-32 degrees C, in some places above 32 degrees C.
Cloudy, with showers and thunderstorms in some places; especially in the late afternoon and evening with scattered showers and thunderstorms.Southwest to west wind level 2-3.In thunderstorms, beware of tornadoes, lightning, hail and strong gusts of wind.
Southern region
Lowest temperature: 25-28 degrees C, in some places below 25 degrees C.
Highest temperature: 31-34 degrees C, in some places above 34 degrees C.
Cloudy, showers and thunderstorms in some places; especially in the late afternoon and evening, scattered showers and thunderstorms, locally heavy rain.Southwest to west wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Ho Chi Minh City
Lowest temperature: 26-28 degrees C.
Highest temperature: 31-33 degrees C.
Cloudy, sometimes showers and thunderstorms, locally heavy rain.Southwest wind level 2-3.In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.