According to the National Center for Hydro-Meteorological Forecasting, on the night of April 19 and September 20: in the evening and at night, there will be showers and thunderstorms in some places; sunny days, some places will be hot, especially in mountainous and midland areas.
Weather from Thanh Hoa to Phu Yen in the evening and at night, there will be showers and thunderstorms in some places; hot sunny days, some places will be very hot.
Weather in other areas in the evening and at night there will be showers and thunderstorms in some places; sunny days, hot weather in some places, especially in the Central Highlands and the South.
People and tourists need to be on guard against thunderstorms that can cause tornadoes, lightning, hail, and strong gusts of wind.

Weather forecast for Hanoi tomorrow
Lowest temperature: 23-25 degrees Celsius.
Highest temperature: 33-35 degrees Celsius, some places above 35 degrees Celsius.
Cloudy, sunny during the day, hot in some places; no rain at night. Southeast to south wind level 2-3.
Weather forecast for the Northwest tomorrow
Lowest temperature: 22-25 degrees Celsius, some places below 21 degrees Celsius.
Highest temperature: 34-36 degrees Celsius, some places above 37 degrees Celsius.
Cloudy, hot sunny days, some places with severe heat; showers and thunderstorms in some places in the late afternoon and night. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Weather forecast for tomorrow in the Northeast
Lowest temperature: 22-25 degrees Celsius.
Highest temperature: 32-35 degrees Celsius, some places above 35 degrees Celsius; mountainous and midland areas 35-36 degrees Celsius, some places above 37 degrees Celsius.
Cloudy, sunny during the day, hot in some places, especially in mountainous and midland areas; showers and thunderstorms in some places in the late afternoon and evening. Southeast to south wind level 2-3. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Weather forecast for tomorrow from Thanh Hoa to Hue
Lowest temperature: 23-26 degrees Celsius.
Highest temperature: 34-37 degrees Celsius, some places above 38 degrees Celsius.
Cloudy, hot sunny days, some places with severe heat; showers and thunderstorms in some places in the late afternoon and night. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Weather forecast for tomorrow in Da Nang to Binh Thuan
Lowest temperature: 24-27 degrees Celsius.
Highest temperature: 35-37 degrees Celsius, some places above 38 degrees Celsius; South 32-35 degrees Celsius, some places above 35 degrees Celsius.
Cloudy, hot sunny days, some places are very hot, especially in the South, sunny days, some places are hot; showers and thunderstorms in some places in the evening and at night. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Weather forecast for tomorrow in the Central Highlands
Lowest temperature: 21-24 degrees Celsius.
Highest temperature: 33-36 degrees Celsius, some places above 36 degrees Celsius.
Cloudy, hot sunny day; showers and thunderstorms in some places in the late afternoon and night. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Weather forecast for tomorrow in the South
Lowest temperature: 25-28 degrees Celsius.
Highest temperature: 33-36 degrees Celsius, some places above 36 degrees Celsius.
Cloudy, hot sunny day; showers and thunderstorms in some places in the late afternoon and night. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.