El Nino, the warming of the surface waters of the Pacific Ocean, is a completely natural phenomenon which is known to affect the weather in many parts of the world.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/africa-strongest-el-nino-20-years-ends
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/all-africa
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/el-nino
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere-and-ozone-layer
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bolivia
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/uruguay
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/brazil
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/landslides
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ethiopia
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/droughts
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/thailand