What do you mean by rainy days?

Meiyu Day refers to the continuous rainy days in the middle and lower reaches of the Yangtze River in China from June to July every year. This time is the mature season of plums in Jiangnan, so it is called Meiyu Day, also known as Meiyu Season and Huangmei Weather.

In ancient times, Meiyu was usually called Huang Meiyu. As early as the Han Dynasty, there were many proverbs about Huang Meiyu. In the Jin Dynasty, there was already a record of "summer rain to the sun, named Huang Meiyu"; Since the Tang and Song Dynasties, there have been many interesting descriptions about Meiyu.

Liu Zongyuan, a writer in the Tang Dynasty, once wrote a poem about Meiyu: "Shi Mei welcomes Meiyu, and it is already late spring. I am deeply worried about the night of the ape, and my dream has run out in the morning. The sea fog connects the South Pole, Jiang Yun dark Beijin, plain clothes today, not for the dust of the imperial city ". Among them, "Shi Mei welcomes the rain" means that when plums are ripe, they welcome the rain from summer to three o'clock in the future. At present, the meteorological plum rain refers to a rainy weather that transits from early summer to midsummer.

In addition, due to the high humidity in the air during this period, everything is easy to be damp and moldy, so people gave Meiyu an individual name, called "Moldy Rain".

Causes and characteristics of Meiyu weather

June-July every year, suitable for the adjustment of atmospheric circulation monsoon. Warm and humid air from the ocean and cold air from the south meet and continue to cross in the Jianghuai Basin, forming a Meiyu front, which leads to rainy weather and high temperature and heavy rain in this area.

When it rains, there are few sunny days, and it is basically cloudy or rainy. The air humidity is relatively high and the temperature is relatively high, giving people a very sultry feeling. Clothes are difficult to dry in this weather and easy to get moldy.