Summer Solstice 2025 Dates Usa. Astronomical summer officially arrives in the northern hemisphere — amidst a heat wave — at 4:51 p.m. The first day of summer arrives with the solstice this year on thursday, june 20, 2025 at 4:51 p.m.
This year the summer will start on thursday june 20, 2025 (day of the summer solstice) and will end on sunday september 22, 2025 with the autumnal equinox. Find the answers to common questions, like: