This is the largest margin by which an annual global land surface temperature has been broken. (ncdc.noaa.gov)
International Surface Temperature Initiative (ISTI) Global Land Surface Temperature Databank — Stage 2 Monthly (data.gov)
«The World Meteorological Organization (WMO) said global land surface temperatures in January and April were likely the warmest since records began in 1880, at more than 1 degree Celsius higher than average for those months. (realclimate.org)