First Day Of Summer 2024 Canada 2024. This year’s summer solstice falls on june 20, 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.
21 rows summer starts at the moment when the sun is farthest north: Thursday, june 20 is the official first day of northern astronomical summer for 2024 — summer solstice — which is the longest day of the year for this half of the planet.