First Day Of Summer 2024 Canada 2024. The first day of summer arrives with the solstice this year on thursday, june 20, 2024 at 4:51 p.m. Winter begins with the winter.

Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m. This is the longest day of the year and marks the start of summer in the northern hemisphere.