**Trader consensus on the lowest temperature in Hong Kong on August 8, 2026, centers tightly on 26–28°C (combined ~71.5% implied probability), reflecting modest uncertainty in overnight conditions during typical late-summer monsoon weather.** Hong Kong Observatory guidance and supporting models currently project minimums near 27–28°C for the date, consistent with the seasonal forecast of normal-to-above-normal temperatures for August–October. Daytime highs are expected around 33–36°C amid humid, partly cloudy to showery conditions that limit nocturnal radiative cooling. Key differentiating factors include variable cloud cover and scattered showers, which can suppress temperature drops by 1–2°C compared with clearer nights, alongside light wind patterns and the urban heat island effect from dense built-up areas that often elevates measured lows at official stations. Historical August minimums average near 25–26°C, but recent model runs and the absence of strong cooling influences (such as a typhoon passage or enhanced northeasterly flow) support the market’s clustering around the warmer side of climatology. With resolution only two days away, fresh updates from the Hong Kong Observatory’s short-range forecasts will likely drive any further shifts in these closely matched outcomes.