Spring is defined by lengthening days and the "greening" of the landscape.
June, July, and August are the three warmest months of the year for most locations. June 1 is a clean, non-varying date that allows weather agencies to compare seasonal data year-over-year without leap year adjustments. when do the four seasons start and end
🔥 Solstice = longest/shortest day of the year. Spring is defined by lengthening days and the
In 2026, the four seasons start and end on different dates depending on whether you use the (solstices and equinoxes) or meteorological (full months) definition. Northern Hemisphere Seasons (2026) Astronomical Dates Meteorological Dates Spring March 20 – June 20 March 1 – May 31 Summer June 21 – September 22 June 1 – August 31 Autumn September 23 – December 20 September 1 – November 30 Winter December 21 – March 19, 2027 December 1 – February 28, 2027 Southern Hemisphere Seasons (2026) Astronomical Dates Meteorological Dates Autumn March 20 – June 20 March 1 – May 31 Winter June 21 – September 22 June 1 – August 31 Spring September 23 – December 21 September 1 – November 30 Summer December 22 – March 19, 2027 December 1 – February 28, 2027 Key Differences 🔥 Solstice = longest/shortest day of the year