Trader consensus clusters tightly around 30–31°C for London's August 3 maximum because short-range models show a warm southwesterly flow and high pressure ridge delivering near-normal late-summer heat, yet differ on cloud cover and timing of any Atlantic front. Official Met Office guidance and ensemble runs indicate daytime maxima of 26–30°C under variable sunshine, with the upper end favored if clear skies allow stronger insolation and reduced sea-breeze cooling. Recent July heatwave persistence has kept probabilities elevated, but any increase in low cloud or earlier wind shift could cap readings at 29°C or below, explaining the near-even split between the two leading outcomes.