Recent forecasts for Cape Town on August 21 point to a high near 19–21°C amid persistent onshore flow and lingering effects from a series of cold fronts positioned south of the country. These fronts have maintained cooler coastal conditions through mid-August, suppressing daytime maxima below seasonal norms around the typical 17–18°C August average. Model guidance and recent warming trends over the interior suggest modest advection of milder air could push the peak toward 21–22°C, aligning with the market’s heaviest trading on those outcomes. Official monitoring from the South African Weather Service and updated numerical guidance expected over the next 24 hours will refine the exact maximum and any last adjustments from cloud cover or wind shifts.
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 August 21?
Highest temperature in Cape Town on August 21?
21°C 39%
22°C 30%
20°C 15%
23°C 11%
NEW
NEW
Aug 21, 2026
16°C or below
1%
17°C
1%
18°C
3%
19°C
4%
20°C
15%
21°C
39%
22°C
30%
23°C
11%
24°C
4%
25°C
1%
26°C or higher
<1%
21°C 39%
22°C 30%
20°C 15%
23°C 11%
NEW
NEW
Aug 21, 2026
16°C or below
$102 Vol.
1%
17°C
$68 Vol.
1%
18°C
$192 Vol.
3%
19°C
$24 Vol.
4%
20°C
$242 Vol.
15%
21°C
$1,334 Vol.
39%
22°C
$218 Vol.
30%
23°C
$236 Vol.
11%
24°C
$20 Vol.
4%
25°C
$59 Vol.
1%
26°C or higher
$673 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 for Cape Town on August 21 point to a high near 19–21°C amid persistent onshore flow and lingering effects from a series of cold fronts positioned south of the country. These fronts have maintained cooler coastal conditions through mid-August, suppressing daytime maxima below seasonal norms around the typical 17–18°C August average. Model guidance and recent warming trends over the interior suggest modest advection of milder air could push the peak toward 21–22°C, aligning with the market’s heaviest trading on those outcomes. Official monitoring from the South African Weather Service and updated numerical guidance expected over the next 24 hours will refine the exact maximum and any last adjustments from cloud cover or wind shifts.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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: Aug 19, 2026, 12:57 AM ET
Volume
$3,168End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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 for Cape Town on August 21 point to a high near 19–21°C amid persistent onshore flow and lingering effects from a series of cold fronts positioned south of the country. These fronts have maintained cooler coastal conditions through mid-August, suppressing daytime maxima below seasonal norms around the typical 17–18°C August average. Model guidance and recent warming trends over the interior suggest modest advection of milder air could push the peak toward 21–22°C, aligning with the market’s heaviest trading on those outcomes. Official monitoring from the South African Weather Service and updated numerical guidance expected over the next 24 hours will refine the exact maximum and any last adjustments from cloud cover or wind shifts.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Cape Town International Airport Station, available here: https://www.wunderground.com/history/daily/za/matroosfontein/FACT.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
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
$3,168End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Recent forecasts for Cape Town on August 21 point to a high near 19–21°C amid persistent onshore flow and lingering effects from a series of cold fronts positioned south of the country. These fronts have maintained cooler coastal conditions through mid-August, suppressing daytime maxima below seasonal norms around the typical 17–18°C August average. Model guidance and recent warming trends over the interior suggest modest advection of milder air could push the peak toward 21–22°C, aligning with the market’s heaviest trading on those outcomes. Official monitoring from the South African Weather Service and updated numerical guidance expected over the next 24 hours will refine the exact maximum and any last adjustments from cloud cover or wind shifts.
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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