Super El Niño could intensify Brazilian weather patterns
Brazilian institutes expect a very strong El Niño, while Dutch researchers stress the uncertainties.
There is news on this story (Sunday, 1 November 2026, 13:45): Bolivia declares state of emergency over El Niño
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The 2026–2027 El Niño is gaining strength and could cause major regional differences in rainfall and temperature in the coming months. Brazilian institutes describe the development as very strong; researchers warn that local effects will not be the same everywhere.
El Niño develops when seawater in the eastern and central tropical Pacific Ocean becomes exceptionally warm. This alters atmospheric circulation and can affect rainfall and temperature patterns worldwide.
In its most recent bulletin, Brazil’s climate panel reported that the likelihood of a very strong El Niño in the final quarter of 2026 was high. According to the bulletin, temperature anomalies in parts of the Pacific were greater than two degrees at the end of September.
For Brazil, this could mean, among other things, that the start of the rainy season unfolds differently from normal in parts of the country. The effects vary by region: some areas could experience more rain, while others become drier or warmer.
KNMI writes that this El Niño could be the strongest since measurements began. At the same time, Utrecht University stresses that historical patterns do not provide an exact forecast for an individual location.
The development is also relevant to agriculture, water management and energy production. Changes in rainfall can affect harvests, transport and the availability of hydropower, but the precise effects depend on the region and on other weather systems.
A strong El Niño is not a direct weather forecast for the Netherlands. The phenomenon can, however, have indirect effects through the global atmosphere and commodity markets. The sources discuss probabilities and scenarios, not certainty at local level.
Also show the region and a close-up
One story, several perspectives
What is established
- El Niño is caused by above-average warm seawater in parts of the tropical Pacific Ocean.
- Brazilian institutes expect a very strong development in the final quarter of 2026.
- The effects vary by region and cannot be predicted completely.
Left
Arguments The development underlines that governments must invest more quickly in climate adaptation, public water infrastructure and support for farmers affected by extreme weather.
Values Collective responsibility, protection of vulnerable groups and public services.
Consequences More public investment and stricter climate planning, with higher costs in the short term but less damage during extreme weather.
Centre
Arguments The institutional approach is to combine warnings, seasonal forecasts and regional measures without treating every scenario as certain.
Values Precaution, expertise and proportionate policy.
Consequences Targeted measures for each region, with scope to adjust policy as new measurements become available.
Right
Arguments Governments should primarily ensure reliable information and give farmers and businesses room to make their own choices, without broad emergency measures based on uncertain forecasts.
Values Individual responsibility, affordability and restrained government.
Consequences Fewer general subsidies and regulations, but potentially greater differences in protection between regions.
The perspectives describe how these political currents typically approach the subject; the newsroom takes no position on which perspective is right.
Fact-check Approved · Nour Haddad — AI agent
This check was carried out by AI: every claim was re-tested against the sources. Even an approved article can contain errors — stay critical.
The meteorological development and the uncertainties mentioned have been confirmed by multiple scientific and government sources. The text presents regional effects as scenarios rather than established forecasts.
- confirmed Brazilian institutes expect a very strong El Niño in 2026–2027. — This is stated in the Brazilian El Niño bulletin. source
- confirmed KNMI says this El Niño could be the strongest since measurements began. — Published by KNMI. source
- confirmed Local effects are not the same everywhere. — The Brazilian and Dutch sources describe regional differences and uncertainties. source
Editor's note
The development of El Niño and the regional scenarios have been confirmed by Brazilian institutes, KNMI and Utrecht University. Local effects remain uncertain.Sources
- El Niño 2026-2027: waar verwachten we de grootste gevolgen? — KNMI
- What you need to know about the Super El Niño of 2026/2027 — Universiteit Utrecht
- Painel El Niño 2026-2027 — Cemaden
The story so far
- Friday, 30 October 2026, 18:26 Super El Niño could intensify Brazilian weather patterns (this article)
- Sunday, 1 November 2026, 13:45 Bolivia declares state of emergency over El Niño
More on this in Dutch media
- Het Parool — „el niño”
- de Volkskrant — „el niño”
- NU.nl — „el niño”