When is the rainy season in Beijing?

June to August is the rainy season every year.

Because Beijing belongs to a typical northern temperate semi-humid continental monsoon climate, it is hot and rainy in summer and cold and dry in winter. The seasonal distribution of annual precipitation is very uneven. 80% of the annual precipitation is concentrated in June, July and August in summer, and there are heavy rains in July and August.

The reason is that the sun's altitude angle increases in summer, and the days are long and the temperature is high. Affected by the Pacific subtropical high, the summer monsoon is prevalent, mainly easterly and southerly winds, with less wind, humidity and rain. The southeast monsoon blowing from the tropical ocean brings abundant precipitation.

Taking the annual precipitation in 20 18 as an example, the annual precipitation in Beijing in 20 18 was 575.5 mm, of which there were 52 rainfalls in the whole city from June 1 day to August 3 1 day, and the accumulated precipitation reached 452.5 mm.

Extended data:

Characteristics of precipitation in Beijing:

1. From the time point of view, summer precipitation accounts for about 3/4 of the annual precipitation. The spatial distribution of summer precipitation is similar to that of the whole year: the windward slope areas in the northeast and southwest are relative precipitation centers, ranging from 450 to 500 mm, less than 400 mm in the northwest and northern mountainous areas, and 400 to 450 mm in the plains and some mountainous areas.

2. In terms of space, the annual precipitation distribution is uneven, with the windward slopes in the northeast and southwest foothills as the relative precipitation centers, ranging from 600 mm to 700 mm, less than 500 mm in the northwest and northern mountainous areas, and between 500 mm and 600 mm in the plains and some mountainous areas. ..

References:

Beijing Meteorological Bureau -20 18 Summer Climate Characteristics in Beijing

Baidu Encyclopedia-Beijing