Is Autumn | What Month

Here’s a solid, clear guide to which months are autumn, depending on the system you’re using.

| Definition Used | Start Month | Peak Month | End Month | | :--- | :--- | :--- | :--- | | | September (1st) | October | November (30th) | | Astronomical | September (22nd-ish) | October | December (21st-ish) | | Southern Hemisphere | March | April | May | what month is autumn

📅 Exact equinox/solstice dates vary slightly by year (usually Sept 22–23 and March 20–21). Here’s a solid, clear guide to which months