**Forecast models and official guidance from the Hong Kong Observatory point to a daily maximum of 27–31 °C on 30 August, with the market tightly clustered around 29–31 °C because of expected increased cloud cover and scattered showers.** A southwest monsoon flow and low-pressure trough will deliver periods of rain and thunderstorms that limit afternoon heating, keeping the peak below recent days’ 32–33 °C readings. Historical August maxima average near 31 °C, but the higher rain probability (medium-high) and slightly lower dew points this weekend tilt consensus toward the middle of the forecast envelope. Subtle differences among 29 °C, 30 °C, and 31 °C outcomes hinge on the timing and coverage of convective clouds versus brief sunny intervals, factors that numerical weather prediction ensembles still resolve with modest spread. Updated HKO briefings and model runs over the next 48 hours will be the key catalysts for any market movement.