From the link I posted...
" Another feature of recent climate in Australia is that background trends have continued; in the case of temperature, the warming trend is adding a warming bias to the natural variability. This was apparent even during the two recent La Niña years. While late 2010 through early 2012 were slightly cooler than the 1961–1990 average, the period was warmer than comparable wet periods of the past, such as those which occurred during the 1970s and 1950s. In other words, while the temperatures were below average, the warming trend held the values higher than they should have been without the trend, given the amount of rain that fell."
I was up in Darwin in 2010, when the La Nina effect began. We pretty much had no dry season that year. It remained hot, humid and rained every single month up there during the southern winter. Not normal at all. The following wet season (which was a record in rainfall) we had a cyclone pretty much form over land. Again, not normal at all even for a La Nina cycle. There is a lot more to consider than just 3 years of data as well. Climate change has been talked about a lot longer than that (as we all know), so a much broader range of time needs to be considered. Up north, the dry seasons are getting shorter and the build-ups (aka "Troppo Season") are getting longer. Once-in-a-hundred-year weather events are repeating more frequently. Severe cyclones are appearing more frequently. It's a long term cycle... not just 3 years.