Current ensemble forecasts from the Met Office and ECMWF indicate a high-pressure ridge over southern England through mid-June, favoring mostly settled conditions with sunny intervals and light winds that support peak temperatures of 24–26°C in London on June 16. This range sits 4–6°C above the long-term June average of roughly 19–20°C, reflecting residual warmth following May’s heatwave and limited cloud cover or precipitation in recent model runs. Small differences in boundary-layer mixing, timing of any diurnal heating peaks, or brief increases in low-level moisture create the tight clustering around these outcomes, as each additional degree requires precise alignment of insolation and wind speed. Traders are monitoring the next high-resolution updates and London City Airport observations, which will clarify whether the maximum settles at the lower or upper end of the favored band before resolution.