With September data no published it is almost certain that 2024 will become the hottest year recorded.

The ECMWF Climate Change Service made this observation after publishing their September update:

"The average anomaly for Oct–Dec 2024 would need to drop by at least 0.41°C for 2024 not to be warmer than 2023.

"A drop of this magnitude in Oct–Dec has never occurred in the ERA5 dataset, therefore, it is almost certain that 2024 will be the warmest calendar year on record."

As mentioned before it seems very likely that 2024 will end at about 1.57ºC above preindustrial.

Back in June of this year the WMO made this observation:

The chance (80%) of at least one of the next five years exceeding 1.5°C has risen steadily since 2015, when such a chance was close to zero. For the years between 2017 and 2021, there was a 20% chance of exceedance, and this increased to a 66% chance between 2023 and 2027.

It would seem this prediction will materialise sooner rather than later, which given most climate related projections seems par for the course.