Autumn Equinox 2025 Australia. Until fairly recently, the 1st of august was “wattle day” in australia (it has now been. Autumn in australia begins on march 20 or 21 and ends on june 20 or 21, placing it between summer and winter.

Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the. So, that means that the 1st day of autumn in.