Fall 2025 First Day

Fall 2025 First Day. In the southern hemisphere, the start of fall will be on march 20, 2025, at 09:02 gmt (05:02 a.m. It’s bringing summer to the southern hemisphere and winter to the northern hemisphere.

By the meteorological calendar, the first day of autumn is always 1 september; In 2024, the autumnal (fall) equinox arrives on sunday, september 22, marking the official first day of fall.