What are the coldest and hottest months of the year?

According to the 24 solar terms in China, the coldest weather in a year is around the Great Cold, usually in the middle and late twelfth lunar month. The hottest time of the year is around the summer heat, usually in the middle and late June of the lunar calendar.

Great cold, like slight cold, is also a solar term indicating the cold weather. Great cold refers to extremely cold weather. According to China's long-term meteorological records, there is no slight cold in the great cold solar terms in the northern region; But for most parts of the south, it is the coldest of the great cold solar terms. After the severe cold, spring came and the weather became warm. At this point, the earth made a revolution around the sun and completed a cycle.

"Summer heat" is heat, and summer heat is extremely hot. The summer heat is the hottest solar term in a year. At this time, it happened to be around the middle of the cup, and "hot and humid steaming" reached its peak at this time. At this time, the sun is fierce, the temperature is high, the humidity is high, and there is much rain. Although it is inevitable to suffer from damp heat, it is very beneficial to the growth of crops, and crops grow fastest during this period. Climatic characteristics of the great summer heat: high temperature and extreme heat, frequent thunderstorms and typhoons. ?

Monsoon climate is the main feature of China climate. In summer, affected by warm and humid air currents from the ocean, many places in southern China are hot, humid and rainy. Every year in late July, the subtropical monsoon rain belt moves to North China-Northeast China. Late July to early August (about hot summer to early autumn) is the rainy season in North China, Northeast China and other northern regions; Northwest China is the arid area with the least annual precipitation in China because it lives inland and is far away from the ocean.

Climate type

Twenty-four solar terms are the product of agricultural civilization and the knowledge system formed by ancient ancestors by observing celestial movement combined with geographical climate and phenological laws. Agricultural production is closely related to geographical and climatic resources, and superior geographical and climatic resources are important conditions for the birth of agricultural civilization. China is located in the east of Asia-Europe continent and the west coast of the Pacific Ocean, with great differences in thermal properties between land and sea, forming the most typical monsoon climate in the world.

Monsoon climate is a mixture of continental climate and maritime climate. In winter, affected by the dry and cold air flow in the inland, the weather is cold, dry and rainy; In summer, it is hot, humid and rainy because of the warm and humid air currents in the ocean. Adequate sunshine, abundant precipitation, high temperature and humid rain and heat are very superior climate resources in China.

. The high temperature period is consistent with the rainy period, and the water and heat match well, which is very beneficial to the growth of crops. Climate factors include illumination, temperature and precipitation, among which precipitation is an important factor of climate. Twenty-four solar terms accurately reflect the changing law of natural rhythm and play an extremely important role in ancient agricultural production.