What's the climate like in Nanjing?

The climate in Nanjing is introduced as follows.

Typhoon: Nanjing is affected by typhoons, with an average of 1 ~ 2 times a year, mostly in June ~10, most frequently in August, followed by July.

Cold wave: the cold wave invading Nanjing (that is, the temperature drops to above 10℃ within 24 hours, and the lowest temperature drops below 5℃).

Weather) 5.5 times a year on average, with the most frequent occurrence in 65438+February. /kloc-cold wave weather can occur in Nanjing from 0/0 to April.

Hail: The probability of occurrence is high in March and May, with 33% each.

High temperature and hot weather: from early June to mid-September, there may be high temperature weather with daily maximum temperature ≥35℃ in the whole city, and it is more frequent from mid-July to late August.

spring

Spring in Nanjing generally begins in late March or early April and ends in late May or early June, with an average duration of 60-70 days. Spring is a transitional season from winter to summer. In terms of atmospheric circulation, spring is still controlled by winter atmospheric circulation, that is, it is mainly affected by cold air near the ground system and westerly circulation at high altitude, but the circulation intensity is much weaker than that in winter. The weather characteristics in spring are: the temperature rises gradually; The precipitation is obviously higher than that in winter; The weather process is changeable.

summer

Summer in Nanjing lasts about 100 days from early June to mid-September, which can be clearly divided into rainy weather in early summer and summer drought weather. Meiyu weather in early summer Every year in early summer (June-July), there will often be a period of continuous rainy weather in our city, that is, frequent precipitation processes and more rainfall. At this time, it is the mature period of plums in Jiangnan, so it is called "Meiyu season". Meiyu weather is characterized by abundant precipitation, high relative humidity, low air pressure, more clouds, less sunshine, weak ground wind and occasional heavy rain. Summer dry weather Nanjing enters summer weather from July to August every year, after the rainy season. If Nanjing is under the direct control of the Pacific subtropical ridge at this time, there will be a period of sunny, hot, high temperature and little rain.

autumn

Autumn is a transitional season from summer to winter. Autumn in Nanjing lasts about 60 days from mid-September to1mid-October, and it is fast and clean, because the summer monsoon is replaced from the ground when the winter wind in China turns south. Often through 1-2 strong cold air bursts, the transformation from summer monsoon circulation to winter monsoon circulation can be completed within 15-20 days. However, the southward withdrawal of the upper subtropical high is relatively slow, so during the period of September-June 65438+1October in autumn, the subtropical high is often superimposed on the low-level cold high, which makes the Yangtze River basin appear a continuous "crisp autumn" and become the golden season with the best weather, the most comfortable weather and favorable autumn harvest. Of course, in some years, there will be continuous rainy weather or typhoon rainstorm weather, and sometimes there will be early frost, hail and other weather to complete the transformation from summer monsoon circulation to winter monsoon circulation.

winter

Winter in Nanjing is from mid-June 165438+ 10 to late March or early April of the following year. The winter climate is characterized by cold air control, cold and dry. The winter weather process in Nanjing is mainly affected by cold wave or cold air, with an average of once every 7- 10 day. Every time cold air goes south, Nanjing has obvious cooling, gale, rain and snow, and then the weather turns fine, frost appears, and it gradually warms up, forming an obvious alternating phenomenon of cold and warm. The main weather features in winter are cold and dry. Cooling and strong winds are the main weather phenomena.