First Day Of Summer 2025 Usa. In 2025, the summer solstice in the northern hemisphere will occur on june 20, 2025, at 10:42 pm edt (or 2:42 am utc on june 21). Need to know the exact date of of the first day of summer this year?
What day is summer 2025? This year the summer will start on thursday june 20, 2024 (day of the summer solstice) and will end on sunday september 22, 2024 with the autumnal equinox.