The National Center for Hydro-Meteorological Forecasting updates the weather forecast for tonight and tomorrow (May 21) in regions across the country.
From the night of May 20 to May 22, the Northeast region, southern Lao Cai, southern Phu Tho, Thanh Hoa and Nghe An continue to have moderate rain, heavy rain and thunderstorms, locally very heavy rain in some places. On the night of May 21, rain decreased to scattered, and on May 22, localized hot sun appeared; Thanh Hoa and Nghe An are likely to experience widespread hot sun.
In the Northwest region, showers and thunderstorms continue in many places, locally with very heavy rain points. On the night of May 21, rain mainly concentrated in Lai Chau and Dien Bien, then on May 22, there is a possibility of localized hot sunshine.

The Central Highlands and Southern regions maintain sunny days, with showers and scattered thunderstorms in the late afternoon and evening. The Southern region has places with localized heavy rain.
Other areas in the late afternoon and night have showers and thunderstorms in some places, sunny during the day, with hot sun in some places. Notably, on May 22, the area from Ha Tinh to Da Nang and the eastern provinces from Quang Ngai to Dak Lak are likely to experience widespread hot sun.
From the night of May 22 to May 30, the weather in the North tends to decrease in rain, only showers and thunderstorms appear in a few places. Lai Chau and Dien Bien will continue to have scattered showers until the end of May 23, concentrated in the late afternoon and night. From about May 23-28, the North is likely to enter a widespread hot spell.
The area from Thanh Hoa to Da Nang and the eastern provinces from Quang Ngai to Dak Lak continue to maintain widespread hot weather for many days to come.
Meanwhile, other areas across the country have showers and thunderstorms in some places. In the South, from May 23-25, there will be scattered showers in the late afternoon, after May 26, thunderstorms tend to increase again in the afternoon and evening.
People and tourists need to continue to be wary of extreme weather phenomena accompanying thunderstorms such as tornadoes, lightning, hail and strong gusts of wind.
Weather forecast for the evening of May 20 and tomorrow May 21 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.