Why does it always rain in Tomb-Sweeping Day?

This is because Tomb-Sweeping Day is the season when winter goes and spring comes. Cold and warm air often meet, and sometimes there is a rain.

Usually during the Qingming period, the sunshine in the northern hemisphere is obviously enhanced. At this time, the western Pacific subtropical high also extended westward, and the southwest wind began to strengthen, transporting warm and humid air from the ocean to the south of China. However, the residual cold air in winter is still "stubborn", resulting in the convergence of cold and warm air and precipitation.

In addition, there are many low-pressure groups in spring, and whenever low-pressure crosses the border, rainy weather will occur. Especially around Tomb-Sweeping Day, there is more water vapor in the atmosphere, which is easy to form rainy weather.

Due to these factors, there are many rains during the Qingming period. But this weather is not absolute. Whether it will rain in Tomb-Sweeping Day depends on the specific meteorological conditions of the month.

Extended data

Precipitation characteristics of Tomb-Sweeping Day-Mao Mao rain;

The rain in Tomb-Sweeping Day is not heavy rain, but Mao Mao rain. It is different from the rainstorm in summer and the intermittent rain in autumn. This is because there is a lot of water vapor in the atmosphere before and after Tomb-Sweeping Day, which is easy to condense into Mao Mao rain at night and has the feeling of Mao Mao rain.

The precipitation during the Qingming period is mainly continuous precipitation, so Mao Mao rain often appears, which has become a unique weather phenomenon in most cities in April.

In addition, for the northern region, the influence of strong cold air on the northern region is mainly concentrated in front of Tomb-Sweeping Day, and the gale cooling and rain and snow weather are mainly concentrated in the early period of Qingming holiday.

People's Network-The wind is late. Is there a shower? Why does it always rain in Mao Mao during the Qingming Festival?