Copernicus:September 2023 the hottest ever

For the period January-September 2023, the global average temperature was 1.40°C higher than the pre-industrial average

ROME - September 2023 was the warmest on record globally, with an average surface air temperature of 16.38°C, 0.93°C above the September average for the period between 1991 and 2020 and 0.5°C above the temperature of 2020, the previous warmest September.The latest data from the Climate Change Service says so Copernicus, the satellite system and land and sea observation stations for the planet financed by the EU.
September 2023 was the most unusually warm month of all years in the ERA5 dataset (going back to 1940).

The month as a whole was about 1.75°C warmer than the September average for the period between 1850 and 1900, the pre-industrial reference period.

Global temperatures for January to September 2023 were 0.52°C above average and 0.05°C above the equivalent period of the warmest calendar year (2016). For the period January-September 2023, the global average temperature was 1.40°C higher than the pre-industrial average (1850-1900).

For Europe, September 2023 was the warmest September on record, con 2.51°C higher than the average for the years between 1991 and 2020 and 1.1°C warmer than 2020, the previous warmest September.

There average sea surface temperature for the month of September, above 60°S-60°N, it reached 20.92°C, the highest ever recorded for the month of September and the second highest of all months, after August 2023 .

“The unprecedented temperatures observed in September – after a record summer – broke records to an extraordinary extent. This extreme month pushed the year 2023 into the dubious record of being the warmest year and exceeding the average temperatures of the pre-industrial era by about 1.4°C. Two months away from COP28, the sense of urgency for ambitious climate action has never been more critical,” warns Samantha Burgess, Deputy Director of the Copernicus Climate Change Service (C3S). Antarctic sea ice remained at a record low for this time of year.

In September, both daily and monthly extent reached the lowest annual highs recorded by satellites, with monthly extent 9% below average.

Daily Arctic sea ice extent reached its 6th annual low, while monthly extent ranked 5th, 18% below average.

The month of September 2023 saw conditions wetter than average along many parts of the western coast of Europe, including the western Iberian Peninsula, Ireland, northern Britain and Scandinavia.

Following the extreme rainfall associated with the storm Daniel, even in Greece the rainfall was above average;this event was also responsible for the devastating floods in Libya.Southern Brazil and southern Chile also recorded extreme precipitation events.

Drier-than-average regions included parts of Europe, the southeastern United States, Mexico, central Asia, and Australia, where the driest September on record was recorded.