Summer length depends on the definition used:
- Meteorological summer lasts exactly 3 months, from June 1 to August 31, totaling 92 days in most years. This is a calendar-based definition used for weather statistics in many countries like the UK, Canada, and Australia.
- Astronomical summer begins at the summer solstice around June 20–21 and ends at the autumn equinox around September 22–23, lasting about 93 days, but the exact dates vary slightly each year due to Earth's orbit.
For practical purposes, summer is usually considered about 3 months or roughly 90–93 days long.
