Current short-range ensemble guidance from the European Centre for Medium-Range Weather Forecasts (ECMWF) and KNMI places Amsterdam’s July 8 maximum near 23–25°C under a mild westerly flow with limited cloud cover and modest daytime heating. This consensus, combined with early-July climatology centered on 21–22°C, underpins the market’s tight clustering around those three outcomes. Differentiation among 23°C, 24°C, and 25°C hinges on small variations in boundary-layer mixing, the precise timing of any scattered afternoon cumulus, and local urban heat-island effects captured in official KNMI station readings. The next high-resolution model cycles and updated ECMWF runs over the next 24–48 hours will narrow the spread and likely shift volume between the adjacent contracts.