These 12 month average trends show a strong cyclic influence on Australian temperatures. GISS, GHCN CAMS and NCDC land data are now updated at KNMI.

GISS supports the BoM which finds the 12 month average mean temperature over Australia has been warmer than ever over recent months.
NCDC finds that periods in 2005 and 2010 had a warmer 12 month average.
GHCN CAMS find warmer 12 month periods in 2005.
The two satellite series have warmer periods in the past than late 2013.
At the end of 2013 the BoM trend is under GISS.