First Day Of Summer 2024 In Florida. It is the summer solstice, which means itโs the longest day of the year. Summer 2024 starts on thursday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth's axis having reached its furthest tilt and begins to change.
Edt, according to the national weather service. The summer solstice 2024 will occur on june 20 at 4:51 p.m.