Is April spring or summer?

Spring begins in early spring (February 2-5) and ends in long summer (May 5-7). In Europe and America, spring begins at the vernal equinox in China and ends at the summer solstice. In Ireland, February to April is designated as spring.

Meteorologists have established a standard for dividing the four seasons as close as possible to the natural scene. Taking the five-day average temperature as the standard, the five-day average temperature after winter passes 10℃ and begins to enter spring. When the temperature is higher than 22℃, it means the end of spring and the beginning of summer.

Extended data:

The angle between the equator and the orbit of the earth is the fundamental reason for the seasonal variation. In spring, the direct point of the sun gradually moves from the tropic of Capricorn to the north, crosses the equator after the vernal equinox, and the sun shines directly into the northern hemisphere. In spring, the distance between the earth and the sun is getting farther and farther. Every year around 65438+10.3, the earth is closest to the sun. Seen from the ecliptic plane, the sun is on the background of Aquarius, Pisces and Aries.

The earth receives more and more direct sunlight, so the temperature begins to rise. In spring, plants begin to sprout and grow, and many flowers bloom. Hibernating animals wake up, many animals with eggs for the winter hatch, and birds begin to migrate, leaving the wintering ground for breeding grounds. Therefore, China also calls spring the season of "everything revives". The changes of temperature and biology in spring also affect people's psychology and physiology.

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