Recent MetService and NIWA guidance points to a mild overnight minimum near 10–12°C for Wellington on August 23, driven by northwesterly flow that limits cold-air advection and nocturnal radiative cooling beneath increasing cloud cover and moderate winds. Trader consensus clusters on the 10°C outcome at 46% implied probability, reflecting model agreement on these thresholds while assigning meaningful weight to colder readings that would require stronger southerly frontal passage or clearer skies allowing greater heat loss. Seasonal outlooks indicate near-average temperatures remain most likely, yet the narrow spread across 8–11°C options highlights sensitivity to small shifts in steering patterns and boundary-layer stability typical of late-winter variability in the region. Updated model runs over the next 24–48 hours will clarify whether any polar air intrusion materializes.