Recent forecasts from the UK Met Office and other models show London on track for a daytime maximum of 26–27°C on August 16 under largely cloudy skies with limited sunshine, light variable winds, and no significant frontal activity or rain, following a hotter 34°C peak on August 14. This consensus underpins the tight clustering of trader probabilities around 25–27°C, with 26°C edging ahead due to ensemble guidance favoring modest daytime heating rather than full clearing. Key differentiating factors include minor variations in predicted cloud cover and boundary-layer mixing: greater afternoon sun would push readings toward 27°C via enhanced solar radiation, while increased low-level cloud or slightly stronger winds would cap peaks nearer 25°C. Historical August averages near 21°C provide context, but the current pattern reflects residual warmth from recent high pressure without extreme heatwave conditions. Updated model runs and official briefings tomorrow morning remain the main near-term catalysts for any shifts.