It says the average temperature for the decade through 2019 is nearly certain to be the highest on record.
This year temperatures have been 1.1C above pre-industrial levels, putting 2019 on course to be the second or third hottest year on record, data from January to October shows.
The report mentioned greater than 10 million individuals have been internally displaced within the first half of 2019 - seven million instantly resulting from excessive climate occasions akin to storms, flooding and drought.
The Intergovernmental Panel on Local weather Change (IPCC) final yr outlined how important it was for mankind to goal for a safer cap of 1.5C - ideally by slashing greenhouse gasoline emissions and retooling the worldwide financial system in the direction of renewable vitality. National records were also set in Germany (42.6°C), the Netherlands (40.7°C), Belgium (41.8°C), Luxembourg (40.8°C) and the United Kingdom (38.7°C), with the heat also extending into the Nordic countries, where Helsinki had its highest temperature on record (33.2°C on 28 July). It said, "Climate variability and extreme weather events are among the key drivers of the recent rise in global hunger and one of the leading causes of severe crises".
"Heatwaves and floods which passe to be "as soon as in a century" events have gotten more typical occurences".
"This poses a threat to crop yields and, combined with population increase, will mean considerable food security challenges for vulnerable countries in the future".
And the rate at which sea levels are rising has increased as a result of melting ice sheets in Greenland and Antarctica, reaching new highs this year.
WMO warned that the oceans are paying a heavy price for global warming as they absorb heat and carbon dioxide.
Ocean heat is at record levels, there have been widespread marine heatwaves and sea water is increasingly acidic, damaging wildlife.
That's the assessment of the World Meteorological Organization on Tuesday (December 3) in a report that paints a bleak picture of vanishing sea ice, devastating heatwaves and encroaching sea levels.
Or, put more scientifically, the past decade is likely to be the hottest since records began in 1850.
"Each decade from the 1980s has been warmer than the previous decade".
He said the world is moving to tackle global warming, but that the ambition level is not high enough to reach the targets set in the Paris Agreement on climate change. "2019 will conclude the warmest decade in records that stretch back to the mid-19th century". According to the United Nations IPCC, the GHG concentrations must stabilise at 450 parts per million (ppm) Carbon dioxide if the planet is to have a 50% chance of avoiding a risky global average temperature rise of 2 degrees Celsius or more above pre-industrial levels.
Greta Thunberg Arrives By Boat in Portugal from the US
She said she travelled by catamaran instead of plane to "send a message it is possible" to live a sustainable lifestyle. She will spend the day holding meetings with Portuguese climate activists and resting before her departure for Madrid.