Badajoz hits 46°C heat record, sparking urban climate debate

Badajoz records 46 degrees as asphalt becomes summer's thermometer

On August 4, 2018, at 5:10 PM, the thermometer in Badajoz capital hit 46 degrees. It was the highest reading since 1920, when city temperature records began. That same day, El Granado, a Huelva municipality of 550 inhabitants, took the national title with 46.6 degrees. The news, published by Europa Press and picked up by outlets like El Mundo and La Sens, ignited a discussion far beyond meteorological anecdote: is this climate change, just typical summer weather, or have we cut down the trees that provided shade?

From cardigans to duvets: how summer has changed in Badajoz

Historical archives are stubborn. A participant retrieves data from Sevilla Tablada for August 1977: no day reached 40 degrees that month, and there were only three tropical nights, all in September. The highest minimum was 20.4 degrees on the 7th. Four decades later, Badajoz endures consecutive days with minimums not dropping below 23 and maximums exceeding 42. The comparison is significant: in the seventies, going out in the afternoon in August in the Pacense capital required, according to popular memory, a light sweater. Today, not even at night.

The 2018 record was not an isolated peak. That same summer, Montoro (Córdoba) marked 42.7 degrees; Mérida, 42.6; Bailén, Fuentes de Andalucía, and Almadén hovered around 42.5. The second heatwave of that August seemed endless. And the debate over whether this is normal or exceptional remains open.

Why do cities become ovens? The role of cobblestones

One of the most repeated currents in the analysis points not to the sky, but to the ground. The thesis is simple: town halls have been removing flower beds, shrubs, and mature trees to replace them with cobblestones and concrete. Less shade, less evapotranspiration, more surface area absorbing heat during the day and releasing it at night. The result is an urban heat island that exacerbates any meteorological episode.

"First they let them die or kill them directly, then remove them and put cobblestones so no one remembers what the area used to look like," summarizes a participant using forum-specific spelling. The complaint is not exclusive to Badajoz: it repeats in other Spanish cities. Some argue these urban planning decisions respond to aesthetic criteria—cobblestones as a symbol of modernity—and others add a more uncomfortable suspicion: that the rise in temperature measured by urban thermometers serves to reinforce the narrative of climate change. This latter part is not backed by evidence; it is an opinion circulating without verification.

Climate denialism and its usual arguments

Not all messages accept the link between heat and climate. A portion of participants minimizes the phenomenon: "a heatwave in summer... never seen before," one ironizes. Another notes that "it has always been hot here as long as I can remember." According to this current, red alerts would be more of a political tool than a meteorological one.

Against them, the data. AEMET confirmed that Badajoz broke its historical record dating back to 1920. The heatwave of August 2018 was the second of the summer and affected much of the peninsula. That it gets hot in summer in Extremadura is not news; that centennial records are broken, yes. However, the discussion does not close: some recall that the seventies also had harsh summers, while others respond that the frequency and intensity of heatwaves have changed.

Badajoz, a livable city? The debate on the drylands

Beyond the climate, the issue drifts toward an uncomfortable question: does it make sense to live in a city with these temperatures? "You have to be sad to live in that dryland," one message states. The response is immediate: "I am in Badajoz. Living a normal life." The defense of life in the Pacense capital coexists with the observation that the Guadiana River, as it passes through the city, carries less water each time.

Demographic profile also plays a role. One intervention points out that the Spanish population is aging and that older people tolerate extreme temperatures worse, which will multiply complaints and health problems in the coming years. It is not an unreasonable prediction: Badajoz has 150,570 inhabitants and one of the country's highest aging rates.

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The thermometer in Badajoz marked 46 degrees that August 4. El Granado, with 550 inhabitants, reached 46.6. The difference between both readings is six tenths. The difference between the summer of 1977 in Seville and that of 2018 in half of Spain is considerably larger. And the debate over how much blame lies with the climate versus the cobblestones remains unresolved.