Last Day Of Summer 2024 Date. March 19, 2024 (vernal equinox) summer: Fall begins with the autumnal equinox, sunday, september 22, 2024, 8:44 a.m.

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 directiion back. June 20, 2024 (summer solstice).