Persistent rain and extensive cloud cover from ongoing convective activity across the Seoul-Incheon region are expected to limit daytime insolation and suppress maximum temperatures on August 22. Official guidance from the Korea Meteorological Administration and ensemble model runs project highs near 27–29 °C under overcast skies, with light easterly flow and dew points near 24 °C maintaining high humidity that further reduces the diurnal temperature range. Recent heavy rainfall through August 21 has left saturated soils and elevated boundary-layer moisture, favoring scattered showers that could briefly interrupt heating. Trader consensus reflected in the tightly grouped 27–30 °C outcomes underscores model spread in shower timing and intensity, with resolution hinging on whether any breaks in cloud cover allow brief warming to 30 °C or prolonged precipitation keeps readings at or below 28 °C.