First Day Of Summer 2024 In Usa. What time does summer start 2024. This year, the first day of summer, also known as the summer solstice, is thursday, june 20.

This year’s summer solstice will arrive this thursday on june 20 for the northern hemisphere, according to nasa. The first day of summer arrives with the solstice this year on thursday, june 20, 2024 at 4:51 p.m.