Latest Central Weather Administration forecasts indicate a high near 30°C for Taipei on August 25 amid persistent cloud cover, scattered showers, and typical subtropical monsoon flow, producing the tight clustering around 29–31°C in trader odds. Afternoon thunderstorms driven by land-sea breezes and high humidity often suppress peak solar heating while urban heat island effects and variable wind patterns introduce small upward biases. Ensemble model spreads reflect uncertainty in exact rainfall timing and intensity, which can shift maxima by 1–2°C, consistent with late-August climatology where daily highs average 31–33°C but frequently fall short under overcast conditions.