According to
GISS NASA, the average global surface temperature anomaly for July was 0.84 °C, which is 0.1 °C higher than the previous hottest July in 2011.
Because July is the hottest month of the year, I've
seen it reported as the
hottest month ever in recorded history!
The average for the
seven months to the end of July is 1.06 °C, which is 0.25 °C higher than any previous January to July period. The previous highest was last year, which with the latest data had an anomaly of 0.81 °C.
There are now
ten in a row of "hottest months" from October 2015 to July 2016 (that is, hottest October, hottest November etc). If we could look back over the entire Holocene, it's probably more than 7,000 years since there was a similar run of hottest months on record, that is, not since the Holocene climatic optimum (it's probably hotter now than it was back then).
Here is a chart of the average of 12 months to July each year. The 12 months to July 2016 averaged 1.02 °C above the 1951-1980 mean and was 0.21 °C hotter than the 12 months to July 2015:
Figure 1 | Global mean surface temperature anomaly for the 12 months to July each year. The base period is 1951-1980.
Data source: GISS NASA