First Day Of Summer 2025 Us. Meteorological fall will arrive sept. 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).
Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s axis having reached. The first day of summer, also known as the summer solstice, marks the official start of the sunniest and warmest season of the year.