"Atmospheric concentrations of carbon dioxide and other greenhouse gases reached new highs in 2012, and we expect them to reach unprecedented levels yet again in 2013. This means that we are committed to a warmer future.
"Surface temperatures are only part of the wider picture of our changing climate. The impact on our water cycle is already becoming apparent - as manifested by droughts, floods and extreme precipitation."
On the news today, Japan is to significantly slash its greenhouse gas reduction target in the wake of the Fukushima nuclear disaster. With all of Japan's nuclear power plants currently offline, the country is forced to increase its burning of fossil fuels. Coal, oil and gas are called "fossil fuels" because they have been formed from the organic remains of prehistoric plants and animals.
This year, Australia recorded its warmest 12-month period on record ending in August. Despite the record temperatures, climate change has proved politically explosive in Australia, with the new government scrapping a controversial carbon tax and refusing to pay into a fund to help poor countries most affected by climate change.
How unfeeling of Australia to keep their toys locked away and not share with the rest of the world.
But Prof Kevin Parton from the Institute for Land, Water and Society at Charles Sturt University in New South Wales said: “The overall message of the WMO statement is that recent conditions from all parts of the globe have been precisely what climate scientists predicted would occur under conditions of global warming.
"Apart from increasing global temperatures, the statement points to many, many examples of extreme weather from the UK to Russia, and from the Sudan to Argentina. It also highlights huge impacts of climate change on Arctic sea ice, the Greenland Ice Sheet, Antarctic sea ice and the rise in global sea level.
"If you look only at heat waves over the last 12 months, then extreme conditions occurred in Australia, South Africa, Pakistan, Austria, Finland, China and Japan.”
Dr Steve Rintoul, research team leader at Australia's CSIRO Marine and Atmospheric Research division, said: "A more significant point is that global-average temperature in each of the last three decades has been warmer than any prior decade dating back to 1850, as reported in the recently released IPCC report. It provides compelling evidence that human activities are primarily responsible for the warming over the last 50 years."