Recent Central Weather Administration forecasts and short-range ensemble guidance point to a peak temperature near 31–33°C in Taipei on May 18, driven by mostly clear skies, moderate subtropical ridging, and strong daytime insolation under typical May humidity levels. Model spreads remain tight because of uncertain boundary-layer mixing and possible late-day sea-breeze cooling along the urban corridor, keeping 31°C, 32°C, and 33°C probabilities closely bunched. These values sit slightly above the long-term May climatological maximum of roughly 29–30°C, reflecting the absence of frontal passages or significant cloud cover in the latest runs. Traders therefore weigh small differences in afternoon wind speed and moisture transport as the decisive factors that will determine the final recorded high at Songshan Airport.