Recent forecasts from the Japan Meteorological Agency and ensemble models indicate a high around 30–31°C for Tokyo on August 28, with scattered showers, extensive cloud cover, and light southerly winds expected to limit peak heating. High humidity and reduced solar insolation under overcast conditions create uncertainty between these thresholds, as even modest shifts in timing or intensity of precipitation could alter the daily maximum by 1°C. Trader consensus reflects this narrow spread, with historical late-August averages near 30.3°C providing limited additional guidance amid variable steering patterns. Updated model runs and official briefings over the next 48 hours will likely refine the outcome.