Latest forecast models from European and global ensembles indicate a daily maximum near 24°C in Madrid on May 18, driven by a weakening high-pressure ridge and light southerly flow that limits daytime heating while suppressing cloud cover. This setup aligns with the market’s heavy weighting toward 24°C and 23°C outcomes, reflecting the narrow expected range between typical May climatology of 22–25°C and current observational trends showing minimal temperature advection. Minor model disagreements center on exact timing of any weak frontal passage, which could shave or add a degree depending on boundary-layer mixing. With resolution tied to official Spanish meteorological service readings, traders are closely monitoring the next 12-hour update cycle for any shift in the 500-hPa pattern that might favor 25°C or hold temperatures at 23°C.