Recent forecasts from the Met Office and other models indicate a maximum around 22°C for London on August 31 under westerly flow, with scattered showers and variable cloud cover likely to cap peaks. This underpins the tight clustering of market-implied odds around 21–23°C, as traders weigh model runs showing highs of 21–23°C depending on exact timing of breaks in cloud and any convective activity. Key differentiating factors include surface pressure gradients driving moderate southwest winds that enhance mixing and limit warming, alongside dew points near 12–14°C and moderate humidity that influence how much solar heating reaches the surface. Recent days of showery, unsettled conditions have kept temperatures near seasonal averages without strong high-pressure building, adding short-term forecast uncertainty ahead of final model updates.