Official Hong Kong Observatory forecasts for August 31 project a minimum temperature of 26°C within a daily range of 26–30°C under mainly cloudy skies with occasional showers and squally thunderstorms. This outlook stems from a persistent broad low-pressure trough over the South China Sea, which sustains high humidity (75–95%) and cloud cover that limits nocturnal radiative cooling in the subtropical environment. Model consensus across sources aligns closely on this range, with minimal day-to-day shifts in recent guidance, though minor variations in shower timing could nudge the actual low by 1°C. Trader emphasis on 26°C reflects these stable atmospheric conditions and historical late-August baselines, while lower probabilities for 25°C or 27°C account for residual forecast uncertainty ahead of final observations.