2016, boosted by a strong El Nino that normally tips the mercury northwards, remains the hottest year on record.
CNN reported that Nasa and the National Oceanic and Atmospheric Administration collected independent data that dates back to 1884 and 1880 respectively to monitor global temperature.
Bushfires burned across Tasmania in January.
"The five warmest years have, in fact, been the last five years".
Weather extremes in 2018 included wildfires in California and Greece, drought in South Africa and floods in Kerala, India.
The United Kingdom Met Office, the U.K.'s weather service, said global temperatures over the next five years will average somewhere between 58.51 and 59.49 degrees Fahrenheit, or 14.73 to 15.27 Celsius.
"The impacts of long-term global warming are already being felt - in coastal flooding, heat waves, intense precipitation and ecosystem change", says Schmidt. Due to slight variations in their data, NASA and Berkeley Earth both have 2010 in 5th place, with 2014 following up in 6th.
Several killed in fire at Flamengo football club training centre
The Fire department stated through local radio that there were boys between the ages of 14 to 17 in the accomodation. Aerial imagery made by "Record" and " Globo " broadcasters shows a red-black CT area completely destroyed by flames.
Increasing temperatures can "contribute to longer fire seasons and some extreme weather events", Nasa also warned.
The UN's World Meteorological Organization said in November that 2018 was set to be the fourth warmest year in recorded history, stressing the urgent need for action to rein in runaway planetary warming.
"That is not saying the Paris Agreement is done for... but it's a worrying sign", he said.
A 10 per cent chance isn't very high, but according to the latest predictions, based on global carbon dioxide emissions (which have begun to rise again), we have less than 16 years before seeing global temperatures peak at over 1.5°C has about as good chances as a coin-flip.
The obvious long-term trend of steady warming makes it easier to more accurately predict near future warming, NASA chief climate scientist Gavin Schmidt said. The Paris pact responded to a 1992 United Nations treaty under which all governments agreed to avert "dangerous" man-made climate change.
He did not mention climate change in his State of the Union speech on Tuesday.