ChartOur World in Data

Global temperature anomalies by El Niño and La Niña and month

The difference between a month's average land-sea surface temperature and the 1991–2020 average of the same month, measured in degrees Celsius. It is classified as El Niño or La Niña based on the Oceanic Niño Index, which tracks warming or cooling patterns in the central Pacific Ocean.

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Our World in Data
Updated
11 Sept 2026
Last checked
17 Sept 2026
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Data visualization: Global temperature anomalies by El Niño and La Niña and month

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Contains modified Copernicus Climate Change Service information (2026); NOAA National Centers for Environmental Information (2026)

Attribution: NOAA National Centers for Environmental Information

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