Is May summer?

The summer time in 2023 is May 14 (taking Beijing as an example).

It was learned from Beijing Meteorological Bureau on May 20th that the summer time of Beijing Meteorological Observatory (a representative meteorological observatory in Beijing) this year is May 14, and the summer time in previous years (199 1-2020 average) is May 20th. It is stipulated that the five-day moving average temperature based on the current temperature series constitutes the moving average temperature series. When the moving average temperature series is greater than or equal to 22℃ for 5 consecutive days, the first date in the corresponding current year temperature series that is greater than or equal to 22℃ is the summer start date.

According to the daily average temperature of Beijing Observatory since May this year, Beijing Climate Center calculated that the 5-day moving average temperature series began to be greater than or equal to 22℃ on May 15, and reached 22℃ for 5 consecutive days on May 19.

Brief introduction of long summer

Spring is fading, summer is getting stronger, cherries are red, bananas are green, wheat is steamed every day, and plums are beaten by rain. The footsteps of spring are drifting away, and the summer when everything grows quietly comes. Long summer is the seventh solar term in the twenty-four solar terms of the lunar calendar and the first solar term in summer, which marks the official start of the season in Xia Meng.

The ancients believed that spring was the time when the weather dropped, the atmosphere rose, the weather was harmonious and plants sprouted. Summer is a time when the weather drops, the atmosphere rises, the heavens and the earth begin to meet and everything is beautiful. "Li Shu" records: "Dou refers to the southeast, Wei refers to the long summer, and everything has grown up since then, so it is named the long summer." Long summer is an important solar term, marking the peak season for the growth of all things. Since then, plants have had irresistible vitality, the smell of the wind has changed, the color of the sky has changed, and a thriving scene has appeared.