Hong Kong’s summer monsoon conditions and persistently high humidity are the dominant factors capping overnight radiative cooling and anchoring minimum temperatures near 26–28°C for July 10, aligning with the Hong Kong Observatory’s normal-to-above-normal seasonal outlook and July climatology. Model consensus shows light winds and variable cloud cover that typically prevent sharp drops, with recent runs indicating only modest spread in the 25–29°C window. Slight differences among the tightly bunched leading outcomes hinge on forecast details such as nocturnal cloud thickness, boundary-layer moisture, or any weak disturbance that could enhance or suppress cooling by 1–2°C. No major typhoon signals or abrupt pattern shifts appear in the short-term guidance, keeping trader focus on these incremental meteorological variables ahead of the next model updates.