The western mountainous areas from Nghe An to Quang Ngai are hot with the highest temperature commonly ranging from 35 - 36 degrees Celsius, in some places above 36 degrees Celsius; the lowest relative humidity commonly ranging from 55 - 60%.

In the late afternoon and evening of May 4, the Central Highlands and the South will continue to experience scattered showers and thunderstorms. Some areas may experience localized heavy rain with rainfall ranging from 10 - 30 mm, with some areas exceeding 50 mm.

On May 5, the North and Central Central regions will have hot weather, some places will have severe heat with the highest temperature commonly ranging from 35 - 37 degrees Celsius, some places above 37 degrees Celsius.

Weather forecast for regions across the country:

Hai Duong cloudy, no rain, sunny in the afternoon. Southeast wind level 2 - 3. Lowest temperature 24 - 25 degrees Celsius. Highest temperature 32 - 33 degrees Celsius.

Hanoi capital is cloudy, sunny during the day, hot in some places; no rain at night. Southeast to south wind level 2 - 3. Lowest temperature 25 - 27 degrees Celsius. Highest temperature 33 - 35 degrees Celsius, some places above 35 degrees Celsius.

The Northwestern region is cloudy, sunny during the day, hot in some places; 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. The lowest temperature is 23 - 26 degrees Celsius, in some places below 23 degrees Celsius. The highest temperature is 32 - 35 degrees Celsius; in some places above 35 degrees Celsius.

The Northeastern provinces are cloudy, sunny during the day, some places are hot; in the evening and at night there are showers and thunderstorms in some places. The wind is from the southeast to the south at level 2 - 3. During thunderstorms there is a possibility of tornadoes, lightning, hail and strong gusts of wind. The lowest temperature is 24 - 27 degrees Celsius. The highest temperature is 32 - 35 degrees Celsius; some places are over 35 degrees Celsius.

Provinces from Thanh Hoa to Hue have clouds, sunny days, especially in the western mountainous areas, hot sun; showers and thunderstorms in some places in the afternoon and evening. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 24 - 27 degrees Celsius. Highest temperature 32 - 35 degrees Celsius; especially in the western mountainous areas, 35 - 36 degrees Celsius, some places above 36 degrees Celsius.

From Da Nang to Binh Thuan, it is cloudy, sunny during the day, especially in the North, there will be hot weather; in the evening and at night, there will be showers and thunderstorms in some places. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 24 - 27 degrees Celsius. Highest temperature 32 - 35 degrees Celsius; in the North, there will be places above 35 degrees Celsius.

The Central Highlands provinces are cloudy with scattered showers and thunderstorms; in the late afternoon and evening, there will be scattered showers and thunderstorms, with some places having heavy rain. Light wind. During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind. The lowest temperature is 20 - 23 degrees Celsius. The highest temperature is 30 - 33 degrees Celsius, with some places above 33 degrees Celsius.

The South is cloudy with scattered showers and thunderstorms; scattered showers and thunderstorms in the late afternoon and evening. Light wind. Thunderstorms may cause tornadoes, lightning, hail and strong gusts of wind. Lowest temperature 24 - 27 degrees Celsius. Highest temperature 31 - 34 degrees Celsius.