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The seasonal anomaly of the global average surface temperature in Autumn (September to November) 2023 (i.e. the average of the near-surface air temperature over land and the SST) was +0.75°C above the 1991-2020 average (+1.28°C above the 20th century average), and was the warmest since 1891. On a longer time scale, global average surface temperatures have risen at a rate of about 0.71°C per century.
1st. 2023(+0.75°C), 2nd. 2015(+0.38°C), 3rd. 2019(+0.31°C), 4th. 2021(+0.30°C), 5th. 2020(+0.29°C)