**High-altitude anticyclone influence is the main driver keeping trader focus on 32–33°C.** The Hong Kong Observatory forecast issued September 28 at 07:50 HKT calls for mainly fine conditions with isolated early showers, very hot daytime temperatures, southwest winds force 3–4, and a 28–33°C range under low rain probability. This setup favors peak readings near the upper end of the forecast. Current station data show several sites already reaching or exceeding 33°C, while the official Observatory reading and urban heat effects introduce modest uncertainty between 32°C and 33°C. Model consensus and climatological September norms align with this narrow band, with limited scope for outliers given stable steering and minimal moisture.