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Nanjing is located in a mid-latitude area with a subtropical monsoon climate, characterized by cold winters, hot summers, and four distinct seasons. The annual precipitation in Nanjing is more than 1,000 mm, making it a humid area. In early summer every year, Nanjing enters the plum rain season due to the influence of frontal rainbands. After the plum rain, the weather is fine and dry, often causing drought.
Nanjing’s climate characteristics: less rain and snow in winter; rainy summer with rain and waterlogging, and major floods in the Yangtze River; continuous rain in the Mid-Autumn Festival, and drought and little rain after late autumn. The temperature is higher in winter, spring and autumn and lower in midsummer, with fewer high-temperature days and cooler summers. There are many dense fogs in November and December. There are no significant typhoons during the year, and the sunshine hours are less than normal.
Precipitation: The annual precipitation is 20% more than normal. The annual rainfall is relatively concentrated, with 9 out of 12 months (January, 2, 3, 4, 5, 7, September, November, and December) being less than the same period of the year, and 3 months (June, August, and October) Rainfall is significantly higher than the same period in normal years, resulting in uneven droughts and floods. January, February, July, and December were more than 40% less than the same period in normal years. Especially in December, almost no rain fell, and severe drought occurred; while June, August, and October were 1-2 times more than the same period in normal years, and 3 There are continuous cloudy and rainy days every month, especially in August, which lasted for 28 days. Due to the lack of sunshine, the rainy weather had a negative impact on autumn-ripening crops. In October, the continuous rainy days lasted for half a month, which was extremely detrimental to the autumn harvest and planting. This year, the plum season is 12 days earlier than normal, the plum season is 22 days longer than normal, and the plum season is 10 days later than normal. Heavy rains are frequent during the plum rain period, and the water level in Xiaguan of the Yangtze River is as high as the third highest in history. This city has experienced a rare event in history. Flood situation.
Temperature: The annual average temperature is more than half a degree higher than normal, and the temperature varies greatly within the year. The average temperature in January, February and September is 2-3 degrees higher than the same period of the year. Winter is a typical warm winter, and "autumn tiger" appears in September. The annual maximum temperature of 35.8 degrees occurred on September 10. The average temperature in mid-September was as high as 35 degrees, ranking fourth since data began to be collected in 1905. The average temperature in June, July and August was 1-2 degrees lower than normal, and the number of high-temperature days in summer Only one day, a typical cool summer year. Strong cold wave weather occurred in both spring and autumn. From October 8th to 9th, heavy snow fell across the city, the temperature dropped sharply, and a large area of crops suffered freezing damage; from October 24th to 27th, affected by strong cold air, the temperature dropped to more than 13 degrees. ; From December 19th to 23rd, we were hit by strong cold air, with the lowest temperature dropping to -6.9 degrees. The cold air came fiercely, and the intensity of the cooling was unprecedented for the same period in the past 10 years.
Sunshine: The annual sunshine hours are 342 hours less than the normal years. In March, June, August and October, due to the continuous rainy weather, the sunshine hours are more than 35 hours less than the same period of the normal years. The sunshine hours are less than the same period of the normal years. More than 15 hours more.
The best time of the year is autumn (September-November).
The absolute maximum temperature is 43 degrees
The absolute minimum temperature is -14 degrees
The annual average temperature is 15.7 degrees
The hottest monthly average temperature is 28.1 Degree
The average temperature of the coldest month is -2.1 degrees
The average annual rainfall is 1021.3mm
The maximum average humidity is 81%
The maximum wind speed 19.8m/s
The maximum soil freezing depth is -0.09m
The dominant wind direction in summer is southeast and easterly
The dominant wind direction in winter is northeast and easterly
Earthquake intensity 7 degrees
Frost-free period 237 days
Weather station location: 32.0 degrees north latitude, 118.8 degrees east longitude, 7 meters above sea level