Recent forecasts for Guangzhou indicate a subtropical high-pressure system may weaken slightly by August 21, allowing increased cloud cover and light rain that limits daytime solar heating and caps maximum temperatures near 32–34°C. High humidity levels around 80–90% and potential urban heat island effects from the Pearl River Delta could push readings toward the upper end of that range if skies clear briefly, while stronger monsoon moisture or thunderstorms would favor the lower outcomes near 32°C. Model consensus from agencies like the China Meteorological Administration shows modest day-to-day variability driven by steering winds and localized convection, creating the tight clustering of trader probabilities around 32–35°C amid typical late-summer conditions.