When Is: The Australian Summer

The official meteorological and chronological Australian summer runs from December 1 to February 28 (or 29) . However, the more culturally and climatically relevant definition is December, January, and February . Unlike the Northern Hemisphere, where summer is centered around June–August, the Australian summer coincides with the Christmas and New Year holiday period. 1. Official Date Ranges | Type | Start Date | End Date | Key Notes | | :--- | :--- | :--- | :--- | | Meteorological | December 1 | February 28/29 | Used for weather recording and climate statistics. | | Astronomical | December 21 (Summer Solstice) | March 20 (Autumnal Equinox) | Based on Earth's tilt; varies by ±1 day. | | Cultural/Practical | Early December | Late February | Aligns with school holidays, Christmas, and peak tourist season. |