**Forecast models for Guangzhou on August 21 point to a daytime maximum near 31–33°C under active East Asian monsoon flow, with scattered thunderstorms and cloud cover expected to moderate peak heating through reduced solar radiation and evaporative cooling.** This aligns with trader consensus favoring 33–34°C outcomes, as monsoon moisture typically suppresses extremes compared to clearer subtropical summer patterns. Historical late-August averages hover around 32–33°C, though urban heat island effects in Guangzhou can add 1–2°C locally on days with partial clearing. Variability in storm timing and intensity creates the narrow spread across 32–35°C probabilities, with any delayed or lighter precipitation potentially allowing brief spikes toward 35°C. Updated runs from the China Meteorological Administration and global ensembles over the next 48 hours will refine these details ahead of resolution.