**Current forecasts for Tokyo indicate overnight lows near 23–24°C on August 14, 2026, aligning with the market’s leading outcomes of 24°C (46.5%) and 23°C (29.0%).** Typical mid-August nighttime temperatures in Tokyo average 24–25°C, driven by the urban heat island effect, high humidity from the East Asian summer monsoon, and limited radiative cooling under the influence of the North Pacific subtropical high. Recent Japan Meteorological Agency and international model guidance show cloudy skies and scattered showers on August 13–14, which can enhance nighttime cooling by increasing cloud cover and reducing daytime heat buildup, supporting the slight edge toward 23–24°C. These conditions reflect normal late-summer patterns rather than extremes, with no major typhoon or heatwave signals altering the outlook in the latest runs. Trader consensus, reflected in the tight clustering around these values, incorporates the inherent uncertainty in short-range temperature forecasts, where small shifts in precipitation timing or wind could adjust the minimum by 1°C. Updated model outputs and official JMA briefings over the next 48 hours will likely drive any further market movement as the resolution date approaches.