What'S The First Day Of Summer 2024. The first day of summer is also known as the summer solstice, and in 2024 it happens on thursday, june 20 at 4:51 p.m. * the dates of summer given on this page are for the northern hemisphere.

This year, the first day of summer, also known as the summer solstice, is thursday, june 20. It is also known as the summer solstice and it officially arrives at exactly 4:51.