Is it raining in Beijing because of typhoon?

The heavy rain in Beijing in July 2023 was due to a typhoon.

The main cause of heavy rain in Beijing is the impact of two typhoons. One is Typhoon Dusuri, which moved northward from the south. It landed in Zhejiang on July 29, and then moved northwestward. It combined with the warm and humid air flow outside the subtropical high and transported a large amount of water vapor to North China. The other is Typhoon Kanu, which meanders from the outer sea and approaches the coast of my country on August 1.

Beijing is located on the northwest edge of the North China Plain, surrounded by mountains in the west and north, forming a natural barrier with an average altitude of 1,000 meters. In the southeast is a plain that gradually moves lower, facing the southeast monsoon. This terrain is conducive to the increase in heavy rainfall and triggers strong convective weather, resulting in heavy rainstorms in the piedmont area.

Beijing’s climate characteristics:

Beijing’s climate is a warm temperate semi-humid and semi-arid monsoon climate, with high temperatures and rainy summers, cold and dry winters, and short spring and autumn. The frost-free period lasts 180 to 200 days throughout the year, and is shorter in the western mountainous areas. The average rainfall in 2007 was 483.9 mm, making it one of the areas with the highest rainfall in North China.

The seasonal distribution of precipitation is very uneven. 80% of the annual precipitation is concentrated in the three months of June, July and August in summer, and there are heavy rains in July and August. The annual average solar radiation in Beijing is 112 to 136 kcal/cm. The average annual sunshine hours in Beijing range from 2,000 to 2,800 hours.

Summer is the rainy season, and the number of sunshine hours decreases, with monthly sunshine hours being around 230 hours. In autumn, although the sunshine hours are not as long as spring, they are more than in summer, with monthly sunshine hours ranging from 230 to 245 hours. Winter is the best time of the year It is the season with the least sunshine hours, with less than 200 hours of sunshine per month, usually between 170 and 190 hours.

Reference for the above content: Baidu Encyclopedia-Beijing