Recent Japan Meteorological Agency forecasts and its seasonal outlook for above-normal late-August temperatures across the Kanto region have anchored trader consensus near 27–28°C for Tokyo’s August 26 minimum. Persistent high pressure from an expanded Pacific High suppresses overnight radiative cooling, while urban heat-island effects and elevated humidity keep lows elevated relative to the 24–26°C climatological baseline. Model runs show limited wind or cloud cover that could otherwise enhance cooling, creating tight clustering between the leading 27°C and 28°C outcomes. Minor divergences in ensemble guidance on timing of any scattered showers or boundary-layer mixing explain the near-even split, with resolution hinging on the official Otemachi station reading.