Characteristics of solar terms in autumn equinox: Is there more or less rain?

The autumnal equinox is generally less rainy, but it is not absolute.

The characteristics of the autumnal equinox solar terms are that the temperature difference between day and night increases gradually, and the temperature drops day by day, getting colder day by day, and gradually entering the late autumn season. The situation in the southern hemisphere is just the opposite. In addition, the autumnal equinox season is also an important solar term in agricultural production. After the autumnal equinox, the position of direct sunlight moves to the southern hemisphere, and the northern hemisphere gets less and less solar radiation, while the ground loses more heat and the cooling speed is obviously accelerated.

As the agricultural proverb goes, an autumn rain is accompanied by a cold, and the white dew is divided into nights, and it is cold all night. In August, the wild goose gate opens, and frost comes to the foot of the wild goose. It is not surprising that the temperature drops early in the northeast and frost appears at the autumnal equinox. In terms of rain, because autumn is the transitional season from continental climate to maritime climate, there is usually less rain in the autumn equinox. But in some areas or in some years, the autumnal equinox may be rainy.

In southern China, there are frequent typhoons in autumn, so there may be more rain in the autumn equinox. In addition, under the background of global warming, the climate in some areas may also change, resulting in more rain or less rain in the autumn equinox.

Detailed explanation of the 24 solar terms:

Twenty-four solar terms, a supplementary calendar formulated by China in ancient times to guide farming, are an important part of the long history and culture of the Chinese nation. It reflects the different positions of the earth in its orbit around the sun, that is, the tropic year cycle, which takes every 15 degree as a solar term and runs 360 degrees every year. The twenty-four solar terms are divided into four seasons: spring, summer, autumn and winter. There are six solar terms in each season, and each solar term has its own specific meaning and symbol.

Spring solar terms include beginning of spring, Rain, Sting, Equinox, Qingming and Grain Rain. Beginning of spring marks the beginning of spring. Rain means more rain. Sting means that insects begin to wake up. The vernal equinox is evenly distributed between day and night. Qingming is an important time for grave sweeping and hiking, and Grain Rain marks the peak season of crops.

Summer solar terms include long summer, small full, awn seed, summer solstice, light summer heat and great summer heat. The long summer marks the beginning of summer, the small harvest marks the beginning of wheat fullness, the awning marks the beginning of crop maturity, the summer solstice is the longest day in a year, and the light summer heat and heavy summer heat mark the gradual increase of temperature.

The autumn solar terms include beginning of autumn, Grade Three, Bailu, Autumnal Equinox, Cold Dew and First Frost. Beginning of autumn marks the beginning of autumn. Summer heat means that the temperature drops gradually, white dew means that the weather turns cold, and the autumnal equinox divides day and night equally. Cold dew and first frost indicate that the temperature continues to drop.

Winter solar terms include beginning of winter, light snow, heavy snow, winter solstice, slight cold and severe cold. Beginning of winter marks the beginning of winter. Light snow and heavy snow indicate that the weather is getting cold. Winter solstice is the shortest day in a year, and slight cold and severe cold indicate the lowest temperature.