Although temperatures have begun to ease slightly, the heat persists across the country, sticking to summer-like levels. The atmosphere remains charged with heat, and many regions are approaching the peak of summer. The term canícula is still widely used to describe this period of intense warmth in Spain.
What is a heat wave?
Canícula refers to the hottest stretch of the year, commonly called the summer heatwave. In Spain, the term often marks a specific slice of summer, though usage can vary by region. It is the time when daily highs rise to their highest point and dominant warm trends settle in across the country.
Typically this phase runs from mid-July to mid-August. During this window, daily temperatures frequently exceed 35 degrees Celsius, though this can differ by community and year. In some southern zones, heat can climb beyond 40 degrees on the hottest days, prompting heightened caution and protective measures.
The heat is sometimes amplified by the island effect, which intensifies warmth in cities. Urban heat refers to the phenomenon where metropolitan areas stay hotter than rural surroundings due to dense development, dark surfaces, and ongoing human activity that traps heat in buildings and asphalt.
During a heat wave, people are advised to take practical steps to prevent heat-related illnesses such as dehydration and heat exhaustion. Hydration is essential, and sun exposure should be limited during the hottest hours. Lightweight, light-colored clothing helps reflect sunlight, and staying indoors with well-ventilated or air conditioned spaces is recommended when possible.
While heatwaves are a familiar feature of Spain’s summer, they also raise concerns in the context of global climate change. Extreme temperatures are expected to become more frequent and intense as average global temperatures rise, as reported by climate researchers and meteorological agencies in the region.
The heat in this heat wave
On the opening day of this year’s heat wave, thermometers across Andalusia, Murcia, the Valencian Community, the Ebro Valley, inland Catalonia, Mallorca, and Castilla-La Mancha are forecast to push past 35 degrees Celsius. In contrast, northern areas are expected to experience comparatively milder highs around 25 degrees Celsius. Local conditions will vary, and daily updates help residents plan accordingly.
Although the second heat wave of the summer has already been endured, vigilance remains necessary as a new thermal zone is anticipated in the coming days. Officials urge communities to stay informed about heat warnings and to follow guidance from local authorities to minimize health risks and energy strain.