Starts June 20–22; ends September 21–23. Hemisphere Inversion: North vs. South
, the seasons are flipped: when it is winter in the U.S. and Canada, it is summer in Australia and South America. The Old Farmer’s Almanac specific region (like gardening or travel) that depends on the seasons? The Four Seasons in Canada | Canada Summer Months - Twinkl
Astronomical seasons are defined by the tilt of Earth's axis relative to its orbit around the sun. These seasons begin and end on specific solar events: two solstices and two equinoxes. Because a calendar year is not perfectly synchronized with Earth's orbit, the start dates shift by a day or two each year. Northern Hemisphere: Verified Months by Season
In the Northern Hemisphere, the meteorological seasons follow the calendar exactly, with comprising March, April, and May; Summer including June, July, and August; Autumn consisting of September, October, and November; and Winter spanning December, January, and February. The Two Seasonal Systems
“The month of February is always a winter month globally.” Verification: ❌ False. In the Southern Hemisphere, February is a summer month (often the hottest). Season-month mapping is hemisphere-dependent.
Whether you follow the start (the 1st of the month) or the Astronomical start (the solstice/equinox), these dates are the verified standards for tracking time. If you’re planning a garden, use the astronomical dates. If you’re checking your local weather records, stick with the meteorological months.
Begins around March 20 (Autumnal Equinox) and ends around June 20. Verified Months: March, April, May. Meteorological: June 1 to August 31.
For astronomical purists: Solstice/Equinox dates vary. Please consult a current ephemeris.
