The lowest temperature in Tianjin

The lowest historical temperature in Tianjin is -3 1℃.

The annual average temperature in Tianjin is 12 ~ 15℃, with the highest average temperature in urban areas. 1 is the coldest month with an average temperature of-5 ~-1℃; It is the hottest in July, with an average temperature of 26 ~ 29℃. The Tianjin monsoon prevails, with an average annual wind speed of 2 ~ 4m/s, mostly from the southwest.

The average annual frost-free period in Tianjin is 196 ~ 246 days, the longest frost-free period is 267 days, and the shortest frost-free period is 17 1 day. Among the four seasons, winter is the longest, 120 ~ 160 days; Followed by summer, 90 ~ 140 days; 55 ~ 60 days in spring; Autumn is the shortest, only 50 ~ 55 days. The average annual precipitation in Tianjin is 550 ~ 600 mm, and the number of precipitation days is 63 ~ 70 days.

In terms of regional distribution, there are more mountains than plains, and more coastal areas than inland areas. According to the seasonal distribution, the precipitation in June, July and August accounts for about 75% of the whole year. Tianjin has a long sunshine time, with an average annual sunshine hours of 247 1 ~ 2769 hours.

Climatic reasons

Tianjin is located in the east of North China Plain, bordering Yanshan Mountain in the north and Bohai Sea in the east. It is the confluence of many rivers in Haihe River Basin. Located in the warm temperate and semi-humid monsoon climate zone, the four seasons are distinct. Winter is controlled by Mongolian cold high pressure, northwest wind prevails and the weather is cold and dry. In summer, it is influenced by the west side of the subtropical high in the northwest Pacific Ocean, with southerly wind, high temperature and high humidity, and rain and heat at the same time.

Spring and autumn are monsoon transition periods, with dry and windy spring, changeable temperature and sunny autumn, but cold waves often strike in late autumn. Tianjin is dominated by continental climate, but influenced by the Bohai Sea, the coastal areas sometimes show maritime climate characteristics, and the land-sea wind phenomenon is more obvious.