When Was The First Day Of Summer 2025 In Australia.  — the summer solstice occurs once a year in december when the sun's track across the australian sky reaches its highest point. Edt (2051 gmt), and the summer solstice for the southern hemisphere occurs on dec.

Edt (2051 gmt), and the summer solstice for the southern hemisphere occurs on dec.  — the summer solstice for the northern hemisphere occurs on june 20, 2025, at 4:51 p.m.