Recent forecasts from the Met Office and other models converge on a daily maximum of 23–24°C in London on August 23 under persistent high pressure, light variable winds, and partly cloudy skies that limit daytime heating. This setup aligns with late-August climatology, where average highs hover near 22°C, and explains the market's heavy weighting toward the 24°C outcome at 56% implied probability. Minor model spread and the possibility of localized warming under clearer spells support the secondary 25°C (23%) and 23°C (21%) shares, while extremes below 22°C or above 26°C remain unlikely given stable synoptic conditions. Official observations from primary stations will finalize the result by evening.