Looks like 2010 has the potential to exceed 1998. So much for global cooling. NOAA - National Oceanic and Atmospheric Administration - NOAA: NOAA: Warmest April Global Temperature on Record NOAA: Warmest April Global Temperature on Record Also Warmest January-April May 17, 2010 The combined global land and ocean surface temperature was the warmest on record for both April and for the period from January-April, according to NOAA. Additionally, last months average ocean surface temperature was the warmest on record for any April, and the global land surface temperature was the third warmest on record. The monthly analysis from NOAAs National Climatic Data Center, which is based on records going back to 1880, is part of the suite of climate services that NOAA provides government, business and community leaders so they can make informed decisions.