Chǔshǔ (处暑): Autumn Begins in China as Temperatures Decline
Chǔshǔ (处暑), meaning "departing heat," is the 14th Chinese solar term, marking the end of summer's peak heat. It signals cooler weather, with noticeable temperature drops and cooler nights.
China's 24 solar terms have entered the Chǔshǔ (处暑) phase, signaling the end of summer's peak heat. This period, typically around August 23rd, heralds declining temperatures and the onset of cooler breezes across many regions of China.
Chǔshǔ literally translates to "departing heat" and signifies a significant seasonal transition. While daytime temperatures may still bring warmth, particularly the "autumn tigers" in southern areas, nights are beginning to cool noticeably. In northern China, this shift is more pronounced with cooler air and a distinct autumnal feel.
The sun's position in the sky changes, marking this seasonal shift. Daylight hours have shortened considerably since the summer solstice, and the sun's noon altitude decreases, making its rays less direct. This astronomical movement supports the traditional Chinese calendar's forecasts for cooling weather.
Traditionally, the Chǔshǔ period held agricultural significance, coinciding with the start of harvest seasons and the ripening of grain crops. Additionally, various customs are associated with this time, including ancestor veneration and the celebration of fishing seasons in coastal areas, welcoming a more abundant supply of seafood as the weather cools.