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El Niño Advisory in effect — Niño 3.4 at +2.6 °C Latest updates

Global Impacts

What El Niño does around the world, region by region — rainfall, drought, fisheries, agriculture, health and economies — based on official assessments from every continent.

South America

Impacts3 min read

Colombia and Venezuela Face a Hydropower Squeeze as El Niño Consolidates

IDEAM warns the developing El Niño could be among the strongest since 1950, and Colombia's grid operator says reservoirs could fall to 19.3% under a very strong scenario. Venezuela, dependent on the Guri dam, appears among the countries in the FAO–WFP anticipatory appeal.

6 official sources cited

North America

Africa

Asia

Impacts4 min read

Salt on the Rice: The Mekong Delta's El Niño Window Opens in November

Vietnam's Mekong Delta is forecast to face severe drought and saltwater intrusion reaching 80–100 km inland from around November 2026 through April–May 2027 — an event authorities assess as equal to or worse than 2015–16. The winter-spring rice crop is being planned around it now.

6 official sources cited

Australia

Pacific Islands

Global

Impacts4 min read

The Disease Lag: How El Niño Reshapes Global Health Risk Months After the Rain

Floods, drought and smoke from an El Niño year translate into cholera, dengue and malaria outbreaks on a delay of one to six months. PAHO's July 2026 analysis maps that risk across the Americas and assesses 756 emergency hospitals for flood and supply-chain vulnerability.

5 official sources cited