When Do The Four Seasons Start And End ❲Trusted — 2027❳

The primary reason we have two sets of start dates is the "lag" between celestial events and actual weather.

| Season | Astronomical Start (approx.) | Astronomical End (approx.) | Meteorological Start | Meteorological End | | :--- | :--- | :--- | :--- | :--- | | | March 20 | June 20 | March 1 | May 31 | | Summer | June 20 | September 22 | June 1 | August 31 | | Autumn | September 22 | December 21 | September 1 | November 30 | | Winter | December 21 | March 20 | December 1 | February 28/29 | when do the four seasons start and end

In the Southern Hemisphere: