When Does Summer Start 2024 California. Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m. In 2024, the solstice will take place on june 20 at precisely 1:51 p.m.

Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m. Most california school calendars are traditional, and run from fall, through winter, to spring, with summer vacation starting in either may or june.