- This summer was the hottest ever recorded in the northern hemisphere.
- June, July and August were 1.17C (2.11F) above the 20th-century average, according to the National Oceanic and Atmospheric Administration (Noaa).
- The new record surpassed the summers of 2016 and 2019.
- The heat was at least 2C (3.6F) above the average in northern Russia and the south-western and north-eastern US.
- In northern Asia, temperatures reached more than 3C (5.4F) above average.
- Europe, Asia and the Caribbean saw their warmest January through August yet. South America saw its second warmest.
- The southern hemisphere, which experiences winter when the northern hemisphere has its summer, had its third warmest season yet.
