First Day Of Summer 20254 2025 Schedule. Summer begins with the summer solstice, friday, june 20, 2025, 10:42 p.m. Need to know the exact date of of the first day of summer this year?

When do the four seasons start in 2025—for spring, summer, fall, and winter? The summer solstice is the day with the most hours of sunlight during the whole year.