The summer of 2023 was the hottest ever recorded, as the climate crisis and emerging El Niño pushed up temperatures and drove extreme weather across the world.
In June, July and August – the northern hemisphere summer – the global average temperature reached 16.77C, which was 0.66C above the 1991 to 2020 average. The new high is 0.29C above the previous record set in 2019, a big jump in climate terms.
