+1.75°C warmest september ever

Earth just had the hottest September on record, around 1.75°C warmer for the month of September compared to the pre-industrial reference 1850-1900 period.

This extreme month has pushed 2023 into the dubious honour of first place – on track to be the warmest year and around 1.4°C above preindustrial average temperatures.

The year 2023 is now on track to be the warmest year on record. Numerous high temperature records have been broken in recent months.

The fact that an individual month exceeds the 1.5 °C limit does not mean that we will permanently exceed the 1.5°C level specified in the Paris Agreement which refers to long-term warming over many years.

Source: WMO