autumn at harvest time; harvest autumn
Refers to the autumn season when crops are ready for harvest, often evoking a sense of abundance and the culmination of the farming year.
今年の出来秋は豊作で、農家は忙しい。
This year's harvest autumn is bountiful, and the farmers are busy.
The rice fields in harvest autumn shine golden.
秋 is the general term for 'autumn', while 出来秋 narrows the focus to the harvest aspect of the season.
Compound of 出来 (deki, 'result, produce') and 秋 (aki, 'autumn'), literally 'produce autumn'.