Return to Australian Climate Variability and ChangeRegional Rainfall Trends

Australia's annual mean rainfall has increased slightly over the last century. Most of this increase has been in the northwest and southeast, as shown by the timeseries of annual mean rainfall for the four quadrants of Australia divided by the lines 135°E and 26°S.

The northeast and southwest quadrants of Australia show little or no trend since 1900. The southwest quadrant has the lowest mean annual rainfall while the northeast displays the largest year-to-year variability.

Click here for CSIRO Atmospheric Research analyses of State rainfall trends.

Trends in annual rainfall