Australia's Seasonal Calendar: Official Start and End Dates

Season Dates in Australia

Due to the Southern Hemisphere, seasons begin on the first of the month:

• Summer: December 1 – February 28 (29 in leap years)
• Autumn: March 1 – May 31
• Winter: June 1 – August 31
• Spring: September 1 – November 30

Dates may vary slightly by region and local climate patterns.