About this Market

Building high pressure over southern England, combined with clearer skies and lighter winds, is driving model consensus for a daytime maximum of 21–23°C in London on June 13. Recent Met Office guidance highlights a transition to drier, brighter conditions through the weekend, with ensemble forecasts showing modest warming above the June climatological average of 19–20°C. Key variables include the exact timing of any residual cloud or showers, which could cap peaks near 21°C, versus stronger insolation and boundary-layer mixing favoring 23°C. Numerical weather prediction runs indicate limited upside beyond 24°C given current steering patterns, aligning with market-implied odds clustered tightly around 22°C. Updated model guidance and official briefings ahead of the daily maximum will refine these probabilities.