also: かじ
noun, adverb
summertime; summer season
Refers to the summer period; can be used as a noun or adverbially. The reading なつどき is the everyday form, while かじ is a rare literary variant.
夏時は日が長くて過ごしやすい。
In summertime the days are long and pleasant.
この店は夏時だけかき氷を売っている。
This shop sells shaved ice only during the summer.
Compound of 夏 (summer) and 時 (time/season). The reading なつどき follows standard kun'yomi compounding; かじ is an older on'yomi-based reading now rarely used.