Recent forecasts from South African Weather Service models and international ensembles show Cape Town's September 9 high likely peaking near 21–23 °C as a cooler southerly flow replaces the recent warm spell that produced 30 °C-plus readings earlier in the week. This shift stems from strengthening south-easterly winds advecting maritime air from the Benguela Current, modest midday insolation under partly cloudy skies, and a slight drop in 850 hPa temperatures. Market-implied odds cluster tightly on 21–23 °C because model runs diverge on exact timing of the wind shift and boundary-layer mixing, creating genuine uncertainty around the daily maximum. Updated guidance and local observations through the morning will likely refine the outcome before resolution.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Cape Town on September 9?
Highest temperature in Cape Town on September 9?
22°C 27%
21°C 20%
23°C 20%
24°C 9%
NEW
NEW
Sep 9, 2026
17°C or below
1%
18°C
3%
19°C
5%
20°C
8%
21°C
20%
22°C
27%
23°C
20%
24°C
9%
25°C
4%
26°C
3%
27°C or higher
<1%
22°C 27%
21°C 20%
23°C 20%
24°C 9%
NEW
NEW
Sep 9, 2026
17°C or below
$211 Vol.
1%
18°C
$211 Vol.
3%
19°C
$178 Vol.
5%
20°C
$271 Vol.
8%
21°C
$193 Vol.
20%
22°C
$31 Vol.
27%
23°C
$15 Vol.
20%
24°C
$36 Vol.
9%
25°C
$31 Vol.
4%
26°C
$34 Vol.
3%
27°C or higher
$202 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=fact
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent forecasts from South African Weather Service models and international ensembles show Cape Town's September 9 high likely peaking near 21–23 °C as a cooler southerly flow replaces the recent warm spell that produced 30 °C-plus readings earlier in the week. This shift stems from strengthening south-easterly winds advecting maritime air from the Benguela Current, modest midday insolation under partly cloudy skies, and a slight drop in 850 hPa temperatures. Market-implied odds cluster tightly on 21–23 °C because model runs diverge on exact timing of the wind shift and boundary-layer mixing, creating genuine uncertainty around the daily maximum. Updated guidance and local observations through the morning will likely refine the outcome before resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=fact
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=fact
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Sep 7, 2026, 12:58 AM ET
Volume
$1,414End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=fact
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Recent forecasts from South African Weather Service models and international ensembles show Cape Town's September 9 high likely peaking near 21–23 °C as a cooler southerly flow replaces the recent warm spell that produced 30 °C-plus readings earlier in the week. This shift stems from strengthening south-easterly winds advecting maritime air from the Benguela Current, modest midday insolation under partly cloudy skies, and a slight drop in 850 hPa temperatures. Market-implied odds cluster tightly on 21–23 °C because model runs diverge on exact timing of the wind shift and boundary-layer mixing, creating genuine uncertainty around the daily maximum. Updated guidance and local observations through the morning will likely refine the outcome before resolution.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Cape Town International Airport Station in degrees Celsius on 9 Sep '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=fact
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=fact
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
In the event that there is no data for the observation date by 11:59 PM ET on the day following the observation date, this market will resolve to the lowest bracket.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °C.
This market will resolve once the first data point for the following date has been published on the resolution source, or by 11:59 PM ET on the day following the observation date, whichever comes first.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$1,414End Date
Sep 9, 2026Market Opened
Sep 7, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...Recent forecasts from South African Weather Service models and international ensembles show Cape Town's September 9 high likely peaking near 21–23 °C as a cooler southerly flow replaces the recent warm spell that produced 30 °C-plus readings earlier in the week. This shift stems from strengthening south-easterly winds advecting maritime air from the Benguela Current, modest midday insolation under partly cloudy skies, and a slight drop in 850 hPa temperatures. Market-implied odds cluster tightly on 21–23 °C because model runs diverge on exact timing of the wind shift and boundary-layer mixing, creating genuine uncertainty around the daily maximum. Updated guidance and local observations through the morning will likely refine the outcome before resolution.
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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