Tokyo's early August temperatures are shaped by the strengthening Pacific subtropical high, which promotes subsidence, clear skies, and above-normal heat following the end of the Baiu rainy season. Japan Meteorological Agency seasonal outlooks issued in late July project warmer-than-average conditions nationwide through August 2026, consistent with the preceding record-hot summer. Short-range guidance for August 6 indicates a daytime high near 32–33 °C under partly cloudy skies with possible showers, typical of urban heat-island amplification in the Tokyo basin where concrete and limited ventilation add 1–2 °C. Model consensus clusters tightly around these values, with modest uncertainty from afternoon convection or slight shifts in steering flow; historical August maxima average 31–32 °C, placing the market-implied distribution squarely within climatological norms.