**Forecasts for Wellington on August 27, 2026, center on a high of 13–14°C amid a shift from mild northerlies to cooler southeasterlies.** Official guidance from MetService and aligned sources projects a daytime maximum near 14°C (roughly 57–58°F), with occasional rain clearing later and winds turning northeasterly by afternoon. Some model runs indicate 13°C or slightly lower if cloud cover and precipitation persist longer, while limited warming could push readings to 15°C under partial clearing. This narrow range explains the market’s even 25% weighting across 12–15°C outcomes, reflecting genuine short-term uncertainty in frontal timing and local wind effects. Wellington’s coastal exposure and variable orography amplify small differences in steering patterns or rainfall duration, typical for late-winter conditions where average August highs hover near 13–14°C. Recent northerly flow has supported milder readings (15–17°C) earlier in the week, but the approaching front introduces cooler marine air, tightening the distribution around the central forecast values. Updated model runs or morning observations on the 26th–27th remain the key near-term catalysts.