Recent forecasts from the Hong Kong Observatory and global models indicate a broad low-pressure trough over the northern South China Sea will sustain cloudy conditions, scattered showers, and thunderstorms on September 1, limiting solar heating and capping daytime highs near 29–30°C. North to northwest winds of 4–5 on the Beaufort scale, combined with high humidity (70–95%), further moderate temperatures by enhancing cloud cover and evaporative cooling. Historical September averages hover around 31°C, yet the current unsettled pattern and short-range model consensus point to slightly suppressed maxima, explaining the tight market split between 29°C and 30°C while assigning lower probability to 31°C or higher. Updated official guidance and afternoon observations will refine these projections ahead of market resolution.