The most common weather in Beijing

The most common weather in Beijing is hot and rainy in summer, cold and dry in winter and short in spring and autumn.

Beijing's climate belongs to warm temperate semi-humid semi-arid monsoon climate. The frost-free period of the whole year is 180 ~ 200 days, which is shorter in the western mountainous area. In 2007, the average rainfall was 483.9 mm, which is one of the most rainy areas in North China. The seasonal distribution of 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 annual average solar radiation in Beijing is 1 12 ~ 136 kcal/cm. The two high-value areas are distributed in Yanqing basin and the northwest of Miyun county to the east of Huairou, respectively, with annual radiation above 135 kcal/cm. The low-value area is located near Xiayunling in Fangshan District, and the annual radiation is 1 12 kcal/cm.

The average annual sunshine hours in Beijing are between 2000 and 2800 hours. The maximum value is over 2800 hours in Yanqing County and Gubeikou, and the minimum value is distributed in Xiayunling and Rizhao for 2063 hours. In summer rainy season, the sunshine hours are reduced, and the monthly sunshine hours are about 230 hours. Although the sunshine hours in autumn are not as much as those in spring, they are more than those in summer, with a monthly sunshine of 230-245 hours. Winter is the season with the least sunshine hours in a year, and the monthly sunshine hours are less than 200 hours, generally between 170 ~ 190 hours.

The topography of Beijing

The mountainous area of Beijing is 10200 square kilometers, accounting for 62% of the total area, and the plain area is 6200 square kilometers, accounting for 38% of the total area. The terrain of Beijing is high in the northwest and low in the southeast. The average altitude in Beijing is 43.5 meters. The elevation of Beijing plain is 20 ~ 60m, and that of mountainous area is generally 1000 ~ 1500m.

West of Beijing is Xishan Mountain, which belongs to Taihang Mountain range. The northern and northeastern parts of Du Jun belong to the Yanshan Mountains. The highest mountain is Dongling Mountain in Mentougou District, western Beijing, with an altitude of 2303 meters. The lowest land is the southeast border of Tongzhou District. The two mountains intersect at Nanguan, forming a semicircle mountain bend spreading to the southeast, which is called "Beijing bend", and the small plain around it is the Beijing small plain. As the ancients said: "The land of Youzhou has the sea on the left, the Taihang Mountain on the right, the Yongjiang River in the north, the big river in the south and the land of abundance."

Reference to the above content: Baidu Encyclopedia-Beijing