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Home — Climate Explorer results: Effects of El Niño and La Niña on world weather: all months

Climate Explorer results

Effects of El Niño and La Niña on world weather: all months

El Niño and La Niña affect the weather in large parts of the world. The effects depend strongly on the location and the season. We have studied the CRU TS 3.22 analyses of 2-meter temperature over land. As a measure of the strength of the relationship we used the correlation coefficient with the Niño3.4 index. The square of this number gives the fraction of the variance that is explained by this aspect of El Niño and La Niña.

Temperature
In the temperature maps, red colours denote locations that on average are warmer during El Niño and cooler during La Niña. Blue colours are colder during El Niño and/or warmer during La Niña. Some North America effects are non-linear: the effect of La Niña is not the opposite of the effect of El Niño.
relationship between El Niño and temperature in January
relationship between El Niño and temperature in February
relationship between El Niño and temperature in March
relationship between El Niño and temperature in April
relationship between El Niño and temperature in May
relationship between El Niño and temperature in June
relationship between El Niño and temperature in July
relationship between El Niño and temperature in August
relationship between El Niño and temperature in September
relationship between El Niño and temperature in October
relationship between El Niño and temperature in November
relationship between El Niño and temperature in December