Recent forecasts from the Japan Meteorological Agency and global models indicate persistent cloud cover, scattered showers, and moderate easterly or northeasterly flow associated with a frontal system will limit daytime heating in Tokyo on August 29. This pattern favors maximum temperatures clustering around 26–29 °C, below the late-August climatological normal of roughly 30–31 °C, as reduced insolation and evaporative cooling from precipitation suppress peak values. Model consensus and recent runs show little support for clear-sky extremes above 30 °C or unusually cool outcomes below 25 °C, consistent with the tight market spread between 27 °C and 28 °C. Updated JMA guidance and high-resolution model outputs expected through August 28 will further refine the precise maximum.