The reason why Hanoi is the focus of hot weather
According to the National Center for Hydro-Meteorological Forecasting, due to the influence of the hot low pressure area in the west, combined with the strong foehn wind effect, from May 22nd - May 27th, the North and Central provinces experienced widespread hot weather.
Around the time from May 24, the midland area, the Northern Delta region (including Hanoi capital), the Central region from Thanh Hoa inwards to Hue city experienced intense and especially intense heat.
The highest temperature during the day is at 38 - 40 degrees Celsius, locally above 40 degrees Celsius. Some places have had temperatures breaking the record of May such as at Uong Bi station (Quang Ninh) on May 25 with the highest daily temperature of 38 degrees Celsius, exceeding the historical value of 37.5 degrees on May 16, 2013; Hiep Hoa station (Bac Ninh) with the highest daily temperature of 39.7 degrees Celsius, exceeding the historical value of 39 degrees Celsius on May 19, 2019; Bac Giang station with the highest daily temperature of 39.4 degrees Celsius, exceeding the historical value of 39.1 degrees Celsius on May 21, 2020; Bac Ninh station with the highest daily temperature of 40.5 degrees Celsius, equal to the historical value of May 21, 2020; Hai Duong station (Hai Phong) with the highest daily temperature of 39.6 degrees Celsius, equal to the historical value of May 21, 2020.
In Hanoi capital, one of the focal points of this heatwave, the highest temperature during the day is often at a high level of 39 - 40 degrees C. At Ha Dong station, the highest temperature in May was recorded at 41.3 degrees in 2019. On May 26, 2026, it was 41.1 degrees C, ranking 2nd; at Lang station, the highest temperature ever recorded was 41.8 on June 4, 2017; while in Hanoi, the absolute highest temperature of the year (taken in Ha Dong) was 42.5 also on June 4, 2017.
The reason Hanoi is one of the focuses of hot weather is that in addition to the impact of low heat and foehn wind, Hanoi is also affected by the urban heat island effect, with a high density of concretization, the temperature observed in Hanoi is often 1 - 2 degrees Celsius higher than neighboring areas.
From May 29, widespread intense heat will end
It is forecasted that this afternoon (May 27) the Northern Delta region, Phu Tho and from Thanh Hoa to Hue city will have intense and especially intense heat with the highest temperature commonly 38 - 40 degrees C, with some places above 40 degrees C.
Other places in the North and the South Central Coast have intense heat, especially intense in some places with the highest temperature commonly 37 - 39 degrees Celsius, in some places above 40 degrees Celsius.
The meteorological agency said that by May 28th, due to the impact of a weak cool air mass moving down from mainland China, the hot low-lying area in the west will weaken somewhat. The hot sun in the North will narrow down to only occur in the midland and delta areas of the Northern region with the highest temperature commonly 35 - 37 degrees Celsius, in some places above 37 degrees Celsius.
The area from Thanh Hoa to Hue city on May 28 has intense heat, especially intense in some places with the highest temperature commonly 37 - 39 degrees C, in some places above 39 degrees C.
From May 29, widespread hot weather will end in the North, in the Central region, hot weather will gradually subside. Due to the influence of hot weather, intense and especially intense hot weather combined with reduced humidity in the air, there is a high risk of fires and explosions in residential areas due to increased electricity demand and the risk of forest fires. In addition, hot weather can also cause dehydration for the human body when exposed to high temperatures for a long time.
