When Does Summer Start 2025. There are 5 months and 7 days until summer 2025 next summer will be on june 1, 2025 ( today (december 25, 2024) is 5 months and 1 week before june 1, 2025 ) In the summer of 2025, there are 78 holidays and days off in united states.
How long does autumn last? The first day of summer, also known as the summer solstice, will occur on saturday, june 21, 2025, at 10:42 pm edt.