Spring Equinox 2025 Australia. Monday marks the date of the spring equinox in australia, with days to be longer than nights for the next six months. Here’s why spring starts when it does and what we can expect from the warmer months.

Images via nasa earth observatory. In 2023, the official first day of spring in australia (southern hemisphere) will occur on saturday, september 23, at sharp 16:50 australian eastern standard time.