Recent forecasts from the Japan Meteorological Agency and other models indicate Tokyo's August 27 minimum will likely fall in the mid-20s°C amid cloudy skies and scattered showers, which reduce overnight radiative cooling by trapping heat and limiting clear-sky temperature drops. High humidity typical of late summer, sustained by the strong Pacific High, further moderates lows near historical averages of 24–25°C, while any breaks in cloud cover could allow slightly cooler readings around 25°C. Trader consensus clusters tightly between 25–27°C because short-range model runs show only modest variability in timing and coverage of showers, with little influence from distant typhoon activity or major frontal passages expected in the next 48 hours. Updated JMA guidance and ensemble outputs through August 26 will refine these thresholds ahead of market resolution.