Autumn: When Is

While the arrival of autumn feels like a simple shift in the wind, the answer to "when is autumn" actually depends on whether you are talking to a meteorologist, an astronomer, or your local barista.

Meteorologists and climatologists use a different system. To keep data consistent and align with the Gregorian calendar, they divide the year into four three-month periods based on temperature cycles. when is autumn

In the Northern Hemisphere, autumn typically spans the months of . In the Southern Hemisphere (like Australia or Brazil), the seasons are flipped, and autumn occurs during March, April, and May . 1. Astronomical Autumn (The Equinox) While the arrival of autumn feels like a

This definition is much easier for record-keeping and forecasting because the dates never change, regardless of the Earth's tilt or orbit. 3. Phenological Autumn (The Nature approach) In the Northern Hemisphere, autumn typically spans the

Here are the key dates of autumn: