The hottest summer in human history – a visual timeline | Climate crisis

Heatwaves, fires, floods and storms occur every year, but their intensity is being steadily amplified by human-caused climate disruption, and in 2023, given an extra boost by an El Niño. Scientists have examined a selection of these events and found human emissions massively loaded the dice in favour of disaster.

The final death toll from these months is likely to be far higher than the casualty figures reported at the time because excess heat deaths take many months to calculate.

It is also a taste of more to come. This summer’s heatwave – or worse – is forecast to occur two out of every five years if global heating reaches 2C above pre-industrial levels, and the world is currently on course to go much higher in the coming decades.