Which months of the year are spring, summer, autumn and winter?

The four seasons are divided according to the climate, but there is no obvious boundary between them, and they change gradually.

Generally speaking, March-May is spring, June-August is summer, September-165438+1October is autumn, and12-February is winter. In the southern hemisphere, on the contrary, it is autumn from March to May, winter from June to August, spring from September to June 1 1, and spring from June to February.

Extended data:

The four seasons on the earth are first manifested as an astronomical phenomenon, which is not only the periodic change of temperature, but also the periodic change of the length of day and night and the height of the sun. Of course, the change of the length of day and night and the height of the sun at noon determines the change of temperature.

The gradual changes of the four seasons are not uniform all over the world. It is summer in the northern hemisphere and winter in the southern hemisphere. The northern hemisphere changes from warm to cold, and the southern hemisphere changes from cold to hot. The length of day and night and the height of the sun change periodically in different seasons.

Refers to the four alternate seasons in a year, namely, spring, summer, autumn and winter. Astronomically speaking, the division of the four seasons is determined by the orbital position of the earth around the sun. When the earth is in different positions in the orbit of revolution at different times of the year, different places on the earth receive different sunlight and different heat from the sun, which leads to seasonal changes and differences between cold and hot.

The four seasons on the earth are not only periodic changes in temperature, but also periodic changes in the length of day and night and the height of the sun. It affects or determines the movement rhythm of many things in the earth's environment, especially the adaptation of creatures.

References:

Baidu encyclopedia-four seasons