The seasonal anomaly of the global average surface temperature in Spring (March to May) 2017 (i.e. the average of the near-surface air temperature over land and the SST) was +0.40°C above the 1981-2010 average (+0.80°C above the 20th century average), and was the 2nd warmest since 1891. On a longer time scale, global average surface temperatures have risen at a rate of about 0.78°C per century.
1st. 2016(+0.52°C), 2nd. 2017(+0.40°C), 3rd. 2015(+0.33°C), 4th. 2014(+0.28°C), 5th. 2010(+0.26°C)