**Persistent cloud cover, fresh to strong southerly to southeasterly winds, and isolated morning showers are keeping Cape Town's peak temperature tightly clustered around 19–21 °C on 12 September 2026.** Official guidance from the South African Weather Service forecasts a maximum of 20 °C under overcast skies, consistent with multiple model runs showing limited diurnal warming from marine air advection and high humidity. Historical September averages near 19 °C provide context, while the current setup—typical of early-spring coastal influences—reduces the chance of outliers above 22 °C or below 18 °C. Traders are weighting the slight edge to 20 °C because afternoon model consensus and observed conditions favor modest rather than pronounced heating before the day ends.
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 12?
Highest temperature in Cape Town on September 12?
20°C 32%
21°C 31%
19°C 16%
22°C 13%
$14,736 Vol.
$14,736 Vol.
Sep 12, 2026
16°C or below
<1%
17°C
<1%
18°C
3%
19°C
16%
20°C
32%
21°C
31%
22°C
13%
23°C
4%
24°C
<1%
25°C
<1%
26°C or higher
<1%
20°C 32%
21°C 31%
19°C 16%
22°C 13%
$14,736 Vol.
$14,736 Vol.
Sep 12, 2026
16°C or below
$272 Vol.
<1%
17°C
$1,217 Vol.
<1%
18°C
$2,049 Vol.
3%
19°C
$1,603 Vol.
16%
20°C
$1,353 Vol.
32%
21°C
$3,120 Vol.
31%
22°C
$1,872 Vol.
13%
23°C
$1,998 Vol.
4%
24°C
$677 Vol.
<1%
25°C
$402 Vol.
<1%
26°C or higher
$175 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 12 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.**Persistent cloud cover, fresh to strong southerly to southeasterly winds, and isolated morning showers are keeping Cape Town's peak temperature tightly clustered around 19–21 °C on 12 September 2026.** Official guidance from the South African Weather Service forecasts a maximum of 20 °C under overcast skies, consistent with multiple model runs showing limited diurnal warming from marine air advection and high humidity. Historical September averages near 19 °C provide context, while the current setup—typical of early-spring coastal influences—reduces the chance of outliers above 22 °C or below 18 °C. Traders are weighting the slight edge to 20 °C because afternoon model consensus and observed conditions favor modest rather than pronounced heating before the day ends.
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 12 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 10, 2026, 12:58 AM ET
Volume
$14,736End Date
Sep 12, 2026Market Opened
Sep 10, 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 12 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.**Persistent cloud cover, fresh to strong southerly to southeasterly winds, and isolated morning showers are keeping Cape Town's peak temperature tightly clustered around 19–21 °C on 12 September 2026.** Official guidance from the South African Weather Service forecasts a maximum of 20 °C under overcast skies, consistent with multiple model runs showing limited diurnal warming from marine air advection and high humidity. Historical September averages near 19 °C provide context, while the current setup—typical of early-spring coastal influences—reduces the chance of outliers above 22 °C or below 18 °C. Traders are weighting the slight edge to 20 °C because afternoon model consensus and observed conditions favor modest rather than pronounced heating before the day ends.
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 12 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
$14,736End Date
Sep 12, 2026Market Opened
Sep 10, 2026, 12:58 AM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=factResolver
0x69c47De9D...**Persistent cloud cover, fresh to strong southerly to southeasterly winds, and isolated morning showers are keeping Cape Town's peak temperature tightly clustered around 19–21 °C on 12 September 2026.** Official guidance from the South African Weather Service forecasts a maximum of 20 °C under overcast skies, consistent with multiple model runs showing limited diurnal warming from marine air advection and high humidity. Historical September averages near 19 °C provide context, while the current setup—typical of early-spring coastal influences—reduces the chance of outliers above 22 °C or below 18 °C. Traders are weighting the slight edge to 20 °C because afternoon model consensus and observed conditions favor modest rather than pronounced heating before the day ends.
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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