A 'Super El Niño' Could Send Temperatures Soaring — What It Means for Spain

What Is a 'Super El Niño'?

A "Super El Niño" isn't an official scientific term — it's informal language used to describe a particularly intense El Niño event, where exceptionally strong warming develops in the tropical Pacific Ocean. But while the name may be informal, the potential consequences are very real.

The US National Oceanic and Atmospheric Administration (NOAA) now estimates a 62% probability of El Niño developing this summer. More specifically, there is a one-in-three chance it will be classified as "strong" between October and December 2026.

How Much Warmer Could It Get?

A typical El Niño causes a temporary 0.1–0.2°C increase in global mean temperature — modest compared to human-caused climate change, which has already raised temperatures 1.3–1.5°C above pre-industrial levels. However, El Niño years frequently rank among the warmest on record, and a strong event could push 2026 or 2027 into record-breaking territory.

For every 1°C temperature rise, the atmosphere retains approximately 7% more moisture, intensifying rainfall and flooding in some regions while amplifying heatwaves and drought in others.

Why Scientists Are Concerned

Researchers at Columbia University have noted it would be "a bit surprising" to experience an event of this intensity so soon after the moderately strong El Niño of 2023–2024. They suggest that human-caused warming might be accelerating the "recharge" cycle of oceanic heat accumulation — meaning the gap between strong El Niño events could be getting shorter.

The previous El Niño, which ran from May 2023 to March 2024, contributed to record-breaking global temperatures and triggered devastating heatwaves, wildfires and floods around the world.

What This Could Mean for Spain

While El Niño's most direct effects are felt in the Pacific region, the knock-on impacts are global — and southern Europe, including Spain, is not immune.

El Niño events have historically been associated with:

• Hotter-than-average summers across the Mediterranean, increasing the risk of prolonged heatwaves
• Heightened wildfire risk, particularly in southern and eastern Spain where vegetation dries out earlier
• Disrupted rainfall patterns, with some areas experiencing wetter conditions and others facing extended drought
• Warmer sea surface temperatures in the Mediterranean, which can fuel more intense storms later in the year

For residents and expats across the Costa Blanca, Costa del Sol and elsewhere in Spain, the practical message is straightforward: if a strong El Niño does develop, be prepared for a summer and autumn that could be significantly hotter and drier than usual — and keep a close eye on wildfire warnings and AEMET forecasts.

The Bigger Picture

El Niño is a natural climate cycle that has occurred for thousands of years. But layered on top of accelerating human-caused warming, each strong El Niño event now pushes temperatures into territory the planet has never experienced before. Whether or not this one becomes a "Super El Niño," the direction of travel is clear — and the risks are growing.

This article is based on reporting from Euronews, published March 31, 2026. This article is for informational purposes only.