How Many Days Until Summer 2025. There are one hundred and seventy days remaining until the beginning of summer, which is marked by the summer solstice and falls on june 21, 2025. 7 months and 24 days.
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 its furthest tilt and begins to change. There are one hundred and seventy days remaining until the beginning of summer, which is marked by the summer solstice and falls on june 21, 2025.