1.
summer season, summertime, summer period
The summer season or period, used especially in official, institutional, and formal contexts such as business schedules, school terms, and event planning.
夏季休暇は八月だ。
Summer vacation is in August.
夏季オリンピックは四年に一度開催される。
The Summer Olympics are held once every four years.
この地域では夏季の気温が四十度を超えることも珍しくない。
In this region, it is not uncommon for summer temperatures to exceed 40 degrees.
USAGE:
A formal compound used in institutional and official contexts. In everyday speech, 夏 (summer) is far more common. 夏季 appears in fixed compounds and formal descriptions.
COMMON COLLOCATIONS:
- 夏季休暇: summer vacation (formal)
- 夏季オリンピック: Summer Olympics
- 夏季講習: summer course/training
- 夏季限定: summer-only, summer limited edition
- 夏季営業時間: summer business hours
SIMILAR WORDS:
夏季 is the formal term for the summer period. 夏 is the everyday word for summer. The counterpart is 冬季 (winter season).