While the dates above apply to the entire country, it's worth noting that the climate and weather conditions can vary significantly across different regions in Australia. For example:
However, for meteorological purposes, summer is considered to start on December 1st. This is because the meteorological seasons are defined by the calendar months, with summer spanning from December to February. This definition allows for easier comparison of weather patterns and climate trends from year to year. when does summer start australia
The decision to start seasons on the first of the month is primarily for . By grouping the three hottest months (December, January, and February) together, the Bureau of Meteorology can more easily compare climate data and seasonal averages over time. While the dates above apply to the entire