[REVISION HISTORY]

Spain and Portugal 2026 heatwave and extreme weather

Updated 48 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-20 09:38 UTC → 2026-09-20 12:56 UTC · added ~~removed~~

By mid-September 2026, the Iberian Peninsula continued to experience extreme weather fluctuations. Following a period of torrential rains in regions like Murcia and Catalonia, high pressure stabilized the atmosphere, triggering a return of significant heatwaves. In Spain, temperatures were expected to exceed 35°C in many areas, with parts of Andalusia, Extremadura, and Castilla-La Mancha potentially reaching between 36°C and 38°C. Specific alerts were issued for Huelva due to heat and Cádiz due to strong easterly winds. As of September 11, the weather pattern remained intense. While some northern regions like Galicia offered cooler conditions, the broader trend indicated a delayed end to the summer heat. In the Canary Islands, a Saharan dust plume was expected to cause hazy skies and reduced air quality. This Saharan dust phenomenon also impacted Cuba, where a cloud of dust was expected to last until mid-September, potentially causing PM10 particulate matter to exceed national safety standards. ~~Authorities in Cuba advised vulnerable groups to limit outdoor activities and wear masks due to the impact on air quality.~~ By September 19 and 20, meteorological conditions in Spain showed significant regional contrasts. Atmospheric stability continued to dominate much of the country, resulting in mostly clear skies. In Andalusia, Sevilla and Córdoba were forecasted to reach highs of 35°C, while ~~Cádiz faced potential wind gusts~~ Écija could potentially hit 38°C by the end of ~~up to 60 km/h. Northern areas like~~ the month, coinciding with the ‘veranillo de San Miguel’. In the north, Bilbao experienced ~~a wider thermal range, with~~ temperatures ~~between 10°C and~~ around 27°C, ~~while~~ though Barakaldo faced potential heavy rain and wind gusts of 30 km/h. While Madrid saw highs of 30°C and coastal areas like Barcelona and Valencia remained more moderate at 28°C, nighttime temperatures dropped significantly in some regions, with Puerto del Pico recording a low of 3.6°C.

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