Official Met Office observations for London on August 16 confirmed a daily maximum of 26°C, anchoring the 100% market consensus after moderation from the mid-August heatwave that peaked near 38°C. Ensemble forecasts from the Met Office and European models aligned on partly cloudy skies, light westerly flow, and limited insolation, producing tight clustering around this value with minimal diurnal range. This outcome sits well within typical late-summer variability for the region, roughly 3–4°C above the 1991–2020 August average. The only realistic challenges would involve post-event quality-control revisions at the primary observing site or an unexpected micro-climate spike at an alternate London station, both rare once provisional figures are released.