Recent forecast guidance from the Met Office and European models points to a cool, unsettled day across London on May 18, with a northerly flow and scattered showers limiting daytime heating and keeping the maximum temperature most likely in the 14–16 °C range. These conditions follow a period of below-average May warmth, as brisk winds and cloud cover suppress the usual seasonal rise driven by longer daylight hours. Ensemble spreads remain modest but show sensitivity to the precise timing and coverage of showers, which can shave 1–2 °C off peak readings. Traders appear to weigh this near-term model consensus most heavily while acknowledging that any late clearing could push readings toward 16 °C or slightly higher.