Australian 12-month mean temperature record broken for third month running
October 2013 mean temperatures well above average
October mean temperatures were unusually warm, with a national anomaly 1.43 °C above the 1961–1990 average. This means that Australia has seen 15 consecutive months of warmer-than-average temperatures, with numerous records broken as a result.
This continuation of unusually high spring temperatures has been sufficient to break the national record for the warmest 12-month period again, the third consecutive month in which a new record has been set.
Averaged over the 12 months from November 2012 to October 2013, Australian mean temperatures were 1.30 °C above the 1961–1990 average. This surpasses the records set in the previous two months (+1.25 °C for October 2012 to September 2013 and +1.11 °C for September 2012 to August 2013) and is some 0.22 °C warmer than any 12-month period prior to 2013 (+1.08 °C for February 2005 to January 2006).
The Remainder of 2013
Temperatures for the calendar year to date (January to October 2013) are also the warmest on record, at 1.32 °C above the long-term average, well above the value for January to October 2005 (+1.08 °C). The record for Australia’s warmest calendar year is currently held by 2005. It is now very likely that 2013 will go on to be Australia’s hottest calendar year on record. The current seasonal outlooks suggests a strong shifts toward warmer than average temperatures.
|Temperature Scenarios for the Remainder of 2013||Annual Australian Temperature Anomaly||Rank and Comment|
|Current temperature anomaly (+1.32 °C) persists to end of year||+1.32 °C||Warmest year on record|
|Last 2 months of 2013 follow the present 10-year average (+0.49 °C)||+1.18 °C||Warmest year on record|
|Temperatures return to the 1961–1990 average (+0.00 °C)||+1.10 °C||Warmest year on record|
|Last 2 months of 2013 are coldest on record||+0.76 °C||4th warmest year on record|