First Day Of Summer 2024 Australia Time. The summer solstice falls between december 21 and 23 in the southern hemisphere each year. Begins on sunday, september 1, and ends on saturday, november 30.
This saturday, december 21, the daylength will be about 14 hours and 25 minutes in sydney and about half an hour longer than that in melbourne. Daylengths for the rest of australiaโs capital cities will range from around 12 hours and 52 minutes to 15 hours and 22 minutes on the summer solstice this weekend.