**A developing very strong El Niño is the dominant driver elevating trader-implied odds for peak October gusts at Wellington Airport (NZWN) above 85 km/h, as the pattern favors enhanced westerly flow across the Roaring Forties and stronger pressure gradients through Cook Strait.** Historical NIWA records show Wellington’s mean daily maximum gust near 65 km/h annually, with October values often reaching 90–100+ km/h during frontal passages; spring trends indicate modest increases in gust frequency. Early October 2026 observations remain moderate, leaving room for the monthly peak to settle in either the 86–95 km/h or 96+ km/h bracket depending on the timing and intensity of subsequent southerly or northwesterly events. Topographic channeling and model spread in El Niño teleconnections introduce the observed uncertainty between these closely matched outcomes, with new NIWA seasonal updates and daily METAR peaks expected to refine probabilities as the month progresses.