Spot on Sam! This is the manifestation of the Southern Annular Mode (SAM in BoM speak). It has a positive/negative measure, and I'm not sure where BoM has it at the moment; but it is clear to any observer of the barometric charts that the highs are further south than normal and of a sausage shape. For a complete look at the Southern Ocean, try this chart:
www.bom.gov.au/fwo/IDY65100.pdf .
So for us Victorians, we cannot even get a decent sea-breeze on Port Phillip and we have not had the rain that has devastated the east coast. Not unknown for this time of year, but worth noting all the same.