Summer Solstice 2025 Australia 2024. The summer solstice occurs once a year in december when the sun's track across the australian sky reaches its highest point. This year, it's friday, december 22.

Summer solstice 2024 (beginning of astronomical summer) on the day of the summer (june) solstice, the solar disk, moving along the ecliptic, will fall into its northernmost point and will be. Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth’s axis having reached.