Weather changes worldwide during an El Niño

There are worldwide impacts of El Niño on weather. Most of these occur during the northern hemisphere winter (December through February). During this time there are generally warmer conditions in the northwestern region and northeastern coast of North America, southeastern Brazil, part of the east coastal region of Asia and India, with warmer and dryer conditions in southeast Africa. Wetter and cooler conditions prevail during an El Niño in the southern part of the United States, with wetter conditions along the northeast coast of Argentina and dryer conditions along the northeast coast of Brazil. During the northern hemisphere summer (June through August) there is little impact of El Niño in the northern hemisphere. The main impacts of El Niño during this period are warmer conditions along the southeastern coast of Brazil and northeastern coast of Argentina, and cooler and dryer conditions in the southern central Pacific Ocean.

Credit: Climate Prediction Center NCEP/NWS/NOAA

For more info: http://www.pmel.noaa.gov/toga-tao/el-nino/nino-home.html