In terms of climate and weather patterns, spring in Australia is characterized by:
Technically begins at the Southern Hemisphere Spring Equinox . In 2025, this occurred on September 23 .
In Australia , spring officially starts on . Unlike the Northern Hemisphere, where seasons are often defined by the astronomical equinoxes (roughly the 21st or 22nd of the month), Australia follows a meteorological seasonal system . This means every season starts on the first day of the respective month, with spring spanning exactly three months: September, October, and November . The Two Ways to Define Spring in Australia Definition Type Start Date Meteorological (Official) September 1 Grouping calendar months for easier statistical comparison. Astronomical September 22 or 23