What is the sign of entering summer in climate?

Summer: In China, summer begins in long summer (May 5-7 every year) and ends in the beginning of autumn; Westerners generally say that the summer of solstice is divided into summer. In the southern hemisphere, 65438+February, 65438+ 10 and February are generally designated as summer. In the climatological sense, it is summer when the average temperature exceeds 22 degrees for five consecutive days, and autumn when the average temperature falls below 22 degrees for five consecutive days.

Seasonal division: Traditionally, China divides the four seasons with four stands as the starting point, beginning of spring is the starting point of spring, and so on.

In the west, bisection is the starting point of dividing the four seasons, vernal equinox is the starting point of spring, and so on.

According to the standard of climate itself-waiting temperature (five-day average temperature), it is divided into: summer-duration with average temperature above 22℃; Winter-a continuous period when the average temperature is lower than10 C; Spring and autumn-/kloc-the period between 0/0 and 22 degrees Celsius.