Wellington, New Zealand, experiences frequent strong westerlies channeled through the Cook Strait by the Roaring Forties, producing climatological peak August gusts that routinely exceed 104 km/h, with official records showing an average annual maximum of 134 km/h. Recent observations in 2026 confirm multiple events with gusts of 130–160 km/h at exposed sites, locking in the market-implied 98.6% probability for the highest bracket through accumulated data from MetService and NIWA monitoring. Forecasters note that model consensus favors continued unsettled patterns, though an unusually stable high-pressure system suppressing all further gusts above 103 km/h before month-end remains the only realistic path to a lower outcome.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedPeak wind gust in the world's windiest city in August
104 km/h or above 98.6%
94 to 103 km/h <1%
93 km/h or below <1%
93 km/h or below
<1%
94 to 103 km/h
<1%
104 km/h or above
99%
104 km/h or above 98.6%
94 to 103 km/h <1%
93 km/h or below <1%
93 km/h or below
<1%
94 to 103 km/h
<1%
104 km/h or above
99%
The resolution source for this market is the gust value in the wind group of NZWN's raw METAR/SPECI observations, encoded in knots (for example, "34020G45KT" denotes a 45-knot gust), as archived by the Iowa Environmental Mesonet (IEM) for station NZWN in network NF__ASOS ("New Zealand ASOS"). Gust speed is converted from knots using 1 kt = 1.852 km/h, rounded half-up to the nearest whole number. Because gusts are reported in whole knots, no observed gust converts to a value on a bracket boundary, so every observation maps to exactly one range.
The month's highest gust can be located via the IEM Data Calendar for NZWN: https://mesonet.agron.iastate.edu/sites/hist.phtml?network=NF__ASOS&year=2026&month=8&mode=monthly&station=NZWN. Each calendar day displays that day's peak gust inline; clicking a day's date opens the daily Summary for NF__ASOS, where the Peak Gust column in the NZWN (Wellington) row shows the day's maximum. Ensure station NZWN is selected, as the NF__ASOS network includes other New Zealand stations. Note that the IEM calendar and summary pages display gusts in mph; resolution is based on the knot value in the underlying raw METAR, which IEM archives alongside each parsed observation and which can be used to independently verify any value.
If any observations are missing or unavailable, this market will resolve to the range containing the highest gust reported during the resolution window. Should the IEM archive be unavailable or discontinued, this market will resolve based on the equivalent raw METAR/SPECI observations for NZWN from another credible archive or the original reporting authority.
Market Opened: Aug 21, 2026, 12:18 PM ET
The resolution source for this market is the gust value in the wind group of NZWN's raw METAR/SPECI observations, encoded in knots (for example, "34020G45KT" denotes a 45-knot gust), as archived by the Iowa Environmental Mesonet (IEM) for station NZWN in network NF__ASOS ("New Zealand ASOS"). Gust speed is converted from knots using 1 kt = 1.852 km/h, rounded half-up to the nearest whole number. Because gusts are reported in whole knots, no observed gust converts to a value on a bracket boundary, so every observation maps to exactly one range.
The month's highest gust can be located via the IEM Data Calendar for NZWN: https://mesonet.agron.iastate.edu/sites/hist.phtml?network=NF__ASOS&year=2026&month=8&mode=monthly&station=NZWN. Each calendar day displays that day's peak gust inline; clicking a day's date opens the daily Summary for NF__ASOS, where the Peak Gust column in the NZWN (Wellington) row shows the day's maximum. Ensure station NZWN is selected, as the NF__ASOS network includes other New Zealand stations. Note that the IEM calendar and summary pages display gusts in mph; resolution is based on the knot value in the underlying raw METAR, which IEM archives alongside each parsed observation and which can be used to independently verify any value.
If any observations are missing or unavailable, this market will resolve to the range containing the highest gust reported during the resolution window. Should the IEM archive be unavailable or discontinued, this market will resolve based on the equivalent raw METAR/SPECI observations for NZWN from another credible archive or the original reporting authority.
Wellington, New Zealand, experiences frequent strong westerlies channeled through the Cook Strait by the Roaring Forties, producing climatological peak August gusts that routinely exceed 104 km/h, with official records showing an average annual maximum of 134 km/h. Recent observations in 2026 confirm multiple events with gusts of 130–160 km/h at exposed sites, locking in the market-implied 98.6% probability for the highest bracket through accumulated data from MetService and NIWA monitoring. Forecasters note that model consensus favors continued unsettled patterns, though an unusually stable high-pressure system suppressing all further gusts above 103 km/h before month-end remains the only realistic path to a lower outcome.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

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