Last month was the third-hottest September on RECORD, experts say

"Last month was the third-hottest September on record, scientists at the EU's Copernicus Climate Change Service (C3S) have revealed. The global average air temperature for the month was 16.11°C (60.99°F), which is 0.66°C (1.18°F) above the 1991-2020 average for September. Worryingly, the new figure is just below the September record-holder from two years ago - a global average air temperature of 16.38°C (61.48°F). Experts point to human-caused greenhouse gas emissions as the cause for last month's conditions, which also saw heavy rainfall and flooding in Europe."

"Samantha Burgess, deputy director of C3S, said the the 'global temperature context remains much the same' one year on from the second-hottest September. 'The global temperature in September 2025 was the third warmest on record, nearly as high as in September 2024, less than a tenth of a degree cooler,' she said. 'Persistently high land and sea surface temperatures [reflects] the continuing influence of greenhouse gas accumulation in the atmosphere.'"

"According to C3S, which is based in Bonn, Germany, last month was 1.47°C (2.64°F) above the September average for 1850-1900. This is the designated 'pre-industrial' reference period to which modern temperatures are compared - and suggests humans are to blame for a long-term warming trend."

September 2025 was the third-hottest September on record, with a global average air temperature of 16.11°C, 0.66°C above the 1991–2020 September average. The value sits just below the September record of 16.38°C set in 2023. The month was 1.47°C above the 1850–1900 September average, the designated pre‑industrial reference period, indicating long-term human-driven warming. Persistently high land and sea surface temperatures reflect continuing greenhouse gas accumulation in the atmosphere. Europe experienced heavy rainfall and flooding in September. Several consecutive months in 2025 have ranked among the warmest on record, and 2025 could exceed 2024 as the warmest year.

Read at Mail Online