When Does Winter Start 2025 Australia. In australia, winter lasts from june to august, with july being the coldest month of the year. When is the winter solstice/first day of winter 2025?
During our winter, sunlight strikes the southern hemisphere at a steeper angle, spreading it over a larger area, meaning the ground receives less heat during winter than during summer. Australia will have its shortest day of the year today when the southern hemisphere experiences the winter solstice.