**Model consensus from European and global ensembles points to a maximum of 33–34°C in central Madrid on August 16, reflecting the tight 41.5%/38.5% split between those two outcomes.** Persistent high pressure over the Iberian Peninsula favors clear skies and strong daytime insolation, while light northeasterly flow limits cooling from the Atlantic; the urban heat island adds 1–2°C relative to rural stations. Recent model runs show modest spread driven by small differences in boundary-layer mixing and exact timing of any weak trough, with 36°C or higher remaining low-probability unless subsidence strengthens further. Historical mid-August baselines average near 32°C, so current conditions sit slightly above normal but short of peak heatwave thresholds. Final AEMET and ECMWF updates on August 15 will narrow the remaining uncertainty before the market resolves.