Hong Kong's July minimum temperatures typically range 26–28°C amid high humidity and urban heat island effects that limit overnight radiative cooling. The Hong Kong Observatory's seasonal outlook calls for normal to above-normal temperatures through September 2026, consistent with long-term warming trends and current ENSO-neutral conditions. For July 21 specifically, forecast guidance points to overnight lows near 27°C under typical monsoon flow, though increased cloud cover or light winds could hold readings at 28°C or higher, while clearer skies might allow brief dips to 26°C. Trader sentiment remains split among these outcomes because short-term model runs show modest variability in boundary-layer moisture and wind patterns two days out, with limited tropical cyclone influence expected in the immediate window.