Why is 'Saigon shining sunny in the afternoon?'

'Saigon is sunny in the afternoon', "Sai Gon is raining and suddenly sunny" . Why? Here is the scientific explanation of MA Le Thi Xuan Lan, one of the experts with many years of experience in the field of weather, meteorology and hydrology in Ho Chi Minh City.

Vietnam is located in an area with tropical climate with two opposite seasons of wind, bringing about two distinct seasons: the dry season and the rainy season. From November to March of the following year, cold air spills over to the North and to the Central, the temperature drops and in the cold season in the North.

In the Central Vietnam, it is cold and rainy because of the north, the cold air returns, the eastern side of Truong Son range welcomes the northeast monsoon with moisture due to the disturbance from the sea. In the south, the dry season starts with a rapid decrease in humidity and increasing sunshine, especially after the spring of 21 March, this intensity increases strongly starting in the hot and sunny period.

At the end of April, there were many sudden downpours that caused many pedestrians to fail.(Photo: Quang Nien).

At the end of April, the weather began to become "dizzy" when it was hot and very hot during the day, after 15-16pm, the sky began to draw clouds and the seasonal rains appeared. During this period, the rain poured down unexpectedly, the sun suddenly rained, people could not keep up.

But wait until there are winds in the South and Southwest direction, also known as the summer monsoon or the southwest monsoon blows evenly, the rainy season really begins.

Characteristics of weather patterns in the South in general and Saigon in particular are sunny in the afternoon due to lower latitudes, closer to the equator, higher solar radiation.

In terms of atmospheric circulation, this is the area directly affected by the southwest monsoon bringing moisture sources from the Bay of Bengal (Indian Ocean), the Gulf of Thailand, the South China Sea so the morning is much sunny, until noon Convection clouds grow fast so rain often occurs in the afternoon and evening.

In the early part of the rainy season, people need to be aware of lightning and tornadoes.(Photo: Quang Nien).

There are also irregular rains, rain both day and night, or rain at dawn when there are special weather patterns that directly affect Nam Bo such as disturbance of east waves, convergent bands, storms and low pressures. Tropical landings. Large-scale rain can cause inundation, flooding . especially when coinciding with high tide peaks, usually in the last months of the rainy season from September to November-December.

Currently, the rainy season in the southern provinces in general and Saigon in particular has just begun, in this period, attention should be paid to lightning and tornadoes. When you see the sky with dark clouds coming, listening to the sound of the wind, thunder and thunder, you need to quickly leave the metal objects, find a safe haven.

When heavy rains need to be in danger because of broken branches, electric poles . falling over by tornadoes.