When Is Spring 2025 Australia. The first day of the calendar month is the beginning of each season. Spring equinox 2025 (beginning of astronomical spring) on the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic.

The first day of the calendar month is the beginning of each season. Warmer than average days and nights are likely to very likely across most of australia.