Spain just lived through its longest, hottest summer in more than 150 years. Two out of every three days brought heatwave conditions, starting in mid-May and still not letting up. The north and northeast saw the sharpest spikes.
Sixty-one days of heatwave in one summer. That is now the reality in Spain. The usual summer calendar has been thrown out by a run of high temperatures that started in May and still hasn't let up. Spain has just gone through a summer that lasted four months. The Agencia Estatal de Meteorología (Aemet) says this was the most intense heat in at least 150 years.
Average temperatures across the country hit 24.5°C. That breaks the previous record from 2025 by 0.3°C, and it is 2.4°C higher than the 1991–2020 average. The north and northeast took the hardest hit. In País Vasco, Navarra, Aragón, and Cataluña, temperatures ran 3.5°C to 4.5°C above normal. Local infrastructure and daily routines were pushed to the edge.
On September 9, 2026, El Granado (Huelva) recorded a temperature of 45.7b0C during a late-summer heatwave, prompting rare red-level risk alerts in Spain.
This summer stands out not just for the heat, but for how long it lasted. Aemet says the season started on May 17 with weather more like July. There is still no clear end, as this week’s highs are expected to stay 5 to 10°C above normal. The numbers are clear: two out of every three days in June, July, and August were officially heatwave days. That is a record, and it shows how much things have changed.
For many people in Spain, the effects have been immediate. Long stretches of heat have strained the power grid, changed daily habits, and forced communities—especially in the north and northeast—to adjust to a climate that no longer follows old patterns. The stress of a summer that will not end is matched by the real problems of living with constant high temperatures.
The forecast does not promise much relief. Aemet expects autumn to be warmer than usual across Spain. There could be more rain in the north and west, but the heat is likely to stick around. This comes on top of other pressures, as reported earlier, with rising energy costs making things even harder for families.
According to official statements from Spain's Ministry for the Ecological Transition, the 'four-month summer' of 2026 broke all previous temperature records, with Aemet confirming it as the hottest since at least 1869. The agency also noted that a secondary heatwave in early September extended the period of extreme temperatures, with five consecutive days of heatwave conditions from September 2 to 7.
Spain’s climate no longer fits the old calendar. The facts from this summer point to a new normal, where extreme heat is not rare but expected. The data is clear: adapting is now a must. As Spain heads into a warmer autumn, the message is simple—the seasons have changed, and so must the country’s expectations.
