NOAA’s Global Climate Report – July 2019 notes
The July 2019 global land and ocean surface temperature departure from average was the highest for July since global records began in 1880 at 0.95°C (1.71°F) above the 20th century average. This value surpassed the previous record set in 2016 by 0.03°C (0.05°F). Nine of the 10 warmest Julys have occurred since 2005, with the last five years (2015–2019) ranking among the five warmest Julys on record.
This makes July the hottest month ever. If we consider land-only (oceans absorb much of the warming)
The global land-only surface temperature for July 2019 was 1.23°C (2.21°F) above the 20th century average and was the second highest July temperature in the 140-year record. July 2017 holds the record for the highest July global land-only temperature at +1.24°C (+2.23°F).
The links in the quotes point to the data sets.