Warmest September on Record

For the third time just this year alone, a new, global high monthly temperature record has been set, according to NASA's Goddard Institute for Space Studies (GISS).

September 2014 was the warmest September on record globally for land/ocean combined, averaging 0.77 degrees C. above the 1951-1980 global mean. May and August of 2014 were also the warmest of those respective months globally, according to GISS. Records go back to 1880.

September of 2005, which averaged +0.73 degrees C. now falls to second warmest on record for September.

So far through September, 2014 is averaging 0.65 degrees above the 1951-1980 mean, according to the GISS data, which currently puts it on pace to be the 2nd warmest year on record behind 2010. However, if latest trends continue into December then 2014 will likely end up the warmest on record.

What is impressive is that we are still not officially under El Nino conditions.

For global land surface only, September 2014 was tied with September 2013 for warmest September on record, averaging 0.99 degrees C. above the 1951-1980 mean.

Breaking it down further, the Northern Hemisphere just had it's 3rd warmest September on record, averaging 0.79 degrees C above the 1951-1980 mean, placing it behind September of 2005 and 2012.

September 2014 was the 2nd warmest September on record for the Southern Hemisphere, averaging 0.75 degrees C. above the 1951-1980 mean, placing it only behind September 2013, which recorded an anomaly of +0.81 C.

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Images courtesy of NASA GISS and are up to date through September 2014.