noun
opening of the beachgoing season
Refers to the official start of the summer beach season, often marked by a ceremony or event. Typically used in news and travel contexts.
今年の海開きは7月1日です。
The beach season opens on July 1st this year.
海開きの日には、安全祈願の神事が行われる。
On the day of the beach opening, a Shinto ritual is held to pray for safety.