Next year will continue the global warming trend with temperatures again likely to rise more than one degree above pre-industrial levels.
According to the Met Office, 2020 will likely be 1.11C warmer than the average between 1850-1900.
The year ahead is set to extend the series of the warmest years on record to six in a row.
Scientists say the strongest factor causing the rise is greenhouse gas emissions.
The world first broke through one degree above pre-industrial temperatures back in 2015.
Each year since then has seen temperatures close to or above this mark.
The warmest year on record is 2016 when a strong El Ni?o made a significant difference.
This weather phenomenon sees sea surface temperatures increase in the central and eastern Pacific and it's associated with a range of impacts around the world, including the overall global level of warming.
According to the Met Office, the chances of a strong El Ni?o in 2020 are low.
The researchers say that the key factor will be emissions of CO2 and other warming gases.
"Natural events - such as El Ni?o-induced warming in the Pacific - influence the climate system, but in the absence of El Ni?o, this forecast gives a clear picture of the strongest factor causing temperatures to rise - greenhouse gas emissions," said Professor Adam Scaife, the Met Office head of long-range prediction.
With temperatures keeping close to the one degree mark, there will be renewed concern from scientists that the world is on track to breach the 1.5C limit that many researchers say is the threshold of increasingly dangerous impacts.