International climate and weather experts did...
NASA has announced that the last six months were collectively the warmest middle half of the year in NASA's records - which date back to 1880.
September 2014 came at the end of a record-breaking six months: April, May, June, and August were all also the warmest of those months on record, and July came in at fourth hottest, according to NOAA.
And remember Australia's 2013/14 record-breaking summer? Looks like we might be set for another one.
Scientists have also recently announced that this warming trend is set to continue - the world is on course for 2014 to be our hottest-ever year.