cool late summer night
Poetic term for a night in late summer when the air begins to feel like autumn.
夜の秋を感じさせる涼しい風が吹いていた。
A cool breeze was blowing, hinting at the arrival of autumn nights.
Compound of 夜 (night) and 秋 (autumn), literally 'night's autumn'. The exact origin is uncertain; it is a poetic expression for the transitional coolness of late summer nights.