MetService’s extended forecast for Wellington on August 12 projects a daytime maximum of 14°C under initially fine conditions turning cloudy with light winds, placing this outcome at the center of current model consensus and driving its 51.5% market-implied probability. Nearby 15°C (33.5%) reflects residual uncertainty in timing of any cloud increase or weak northerly influence that could add 1°C, consistent with recent days when highs reached 14–15°C slightly above the 12–13°C August climatological average. Wellington’s Cook Strait exposure and southerly flow patterns typically cap winter peaks, limiting higher outcomes, while NIWA’s seasonal outlook for near-average temperatures supports the tight clustering around 14°C as the most probable resolution. Updated MetService and international model runs over the next 48 hours will determine any final adjustment before the market settles on official station readings.