Weather & Science

September Broke the Global Heat Record by a ‘Gobsmackingly Bananas’ Margin

The month blew past a previous record by 0.5C, and scientists are running out of ways to describe the recording-setting year.

A tourist speaks with a tour guide under the shade of an umbrella in London during an early September heat wave. The world just experienced the hottest September on record.

Photographer: Chris Ratcliffe/Bloomberg
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The global average temperature for September broke records by such an absurd margin that climate experts are struggling to describe the phenomenon.

“This month was — in my professional opinion as a climate scientist — absolutely gobsmackingly bananas,” Zeke Hausfather, a researcher with Berkeley Earth, said on the social media platforms Bluesky and X.