Recent forecasts from MetService and international models indicate a high near 15–16°C for Wellington on October 15, driven by a slow-moving front crossing the North Island that brings persistent rain, thick cloud cover, and a shift from northerly to stronger southerly winds. This pattern suppresses daytime heating by limiting solar radiation and introducing cooler maritime air, consistent with typical spring volatility under strong westerly flows. Recent days reached 16–17°C under milder northerlies before the front arrived, positioning 16°C as the market leader while leaving modest room for 17°C if clearing occurs earlier than expected. Official observations will resolve the market based on the daily maximum at the primary Wellington station.