Climate
2004-7-15 13:39:56    
Hebei Province is situated in east China and extends across the Middle and South Temperate Zones. So, it has a temperate and continental monsoon climate.

Hebei has a large area with the Bohai Sea to the east, the Taihang Mountains in the west, the Yanshan Mountains in the north, and the plain areas in the southeast. Because of its large size, its location on the continent and its diversified topography, its weather differs greatly, characterized by monsoons and a clear distinction between four seasons. It is dry and windy in spring; hot and rainy in summer; bright and temperate in autumn; and windy, cold and with less snow in winter. 

The average temperature for a year increases gradually from north to south. In the north, such as the Bashang plateau area, the annual average temperature is below 4ˇăC while in central south, it is 12ˇăC. January is the coldest month. The average temperature is below -3ˇăC. for most areas but for the Bashang Plateau, it can be as low as -21ˇăC. July is the hottest month, with an average temperature between 18ˇăC. - 27ˇăC. for the whole province. But for the southwestern area, it can be as high as 39ˇăC- 40ˇăC. The time length for every season is not the same, 2 months for spring and for autumn, and 4 months for winter and summer. In the Bashang Plateau, winter is as long as 7-8 months but summer is only one month. The average frost-free period is 180 days in the plain area while less than 100 days in the plateau area. The Bashang Plateau and the mountainous areas in the north, high in attitude and low in temperature, are suitable for special plants. The central and south plain areas, low in attitude, high in temperature and with plenty of sunshine, are good for growing crops. 

Next only to Tibet and the plateau regions in northwestern China, Hebei is one of the regions with longer hours of sunshine, between 2,450-3,100 hours per year. The percentage of sunshine is 57-69. Its accumulated temperature over zero ranges from 4,000ˇăC.- 4,800ˇăC. a year. For the Bashang Plateau area, the accumulated temperature over zero is less than 4,000ˇăC. a year. 

The annual precipitation is 350-760 mm. with a disparity between seasons and between regions. Hebei receives more precipitation in summer and autumn than in winter and spring, and its southern and eastern parts get more than north and west. From June to September, it receives 60-80 percent of the total annual precipitation but in winter and spring, it receives only 10 percent. In the Bashang Plateau and northwestern mountainous areas, the annual precipitation is less than 400 mm. So, they are the dry areas. The Taihang Mountains lies in the west of Hebei Province and the Yanshan Mountains lies in the north and northwest. Both of them face to the Bohai Sea in the east. When the wet and mild air from the sea goes westward and northward it meets the mountains and forms rain clouds. These areas, known as wet areas, receive an annual precipitation of 600-850 mm. As the rainy season (June to September) fit the sunshine period (March to September) on the whole, this is really a good condition for crops, grasses and forests
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