**Trader sentiment for Cape Town's August 21 high clusters tightly around 20–22°C because official forecasts and model runs converge on a mild winter peak near 20–21°C under stable high-pressure conditions.** Multiple sources, including SA Weather Service guidance and numerical models, indicate a dry, partly sunny day with light southerly winds, allowing afternoon temperatures to reach 19–21°C at representative stations like Cape Town International Airport. Hourly profiles show gradual warming from morning lows near 9–12°C to a midday/afternoon maximum, with some runs peaking at 21°C around 15:00 local time before cooling. Slight model spread—arising from differences in cloud cover timing, wind shifts, or localized urban effects—keeps 20°C and 22°C viable but secondary. Historical August averages (roughly 18°C) provide context, yet today's clearer conditions support the modest upward nudge reflected in market-implied odds. No major synoptic changes or measurement revisions are expected 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 August 21?
Highest temperature in Cape Town on August 21?
21°C 38%
22°C 28%
20°C 18%
23°C 9%
$15,858 Vol.
$15,858 Vol.
Aug 21, 2026
16°C or below
<1%
17°C
<1%
18°C
1%
19°C
4%
20°C
18%
21°C
38%
22°C
28%
23°C
9%
24°C
4%
25°C
1%
26°C or higher
<1%
21°C 38%
22°C 28%
20°C 18%
23°C 9%
$15,858 Vol.
$15,858 Vol.
Aug 21, 2026
16°C or below
$405 Vol.
<1%
17°C
$722 Vol.
<1%
18°C
$447 Vol.
1%
19°C
$535 Vol.
4%
20°C
$1,135 Vol.
18%
21°C
$2,763 Vol.
38%
22°C
$2,310 Vol.
28%
23°C
$2,294 Vol.
9%
24°C
$2,114 Vol.
4%
25°C
$833 Vol.
1%
26°C or higher
$2,300 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.**Trader sentiment for Cape Town's August 21 high clusters tightly around 20–22°C because official forecasts and model runs converge on a mild winter peak near 20–21°C under stable high-pressure conditions.** Multiple sources, including SA Weather Service guidance and numerical models, indicate a dry, partly sunny day with light southerly winds, allowing afternoon temperatures to reach 19–21°C at representative stations like Cape Town International Airport.
Hourly profiles show gradual warming from morning lows near 9–12°C to a midday/afternoon maximum, with some runs peaking at 21°C around 15:00 local time before cooling. Slight model spread—arising from differences in cloud cover timing, wind shifts, or localized urban effects—keeps 20°C and 22°C viable but secondary. Historical August averages (roughly 18°C) provide context, yet today's clearer conditions support the modest upward nudge reflected in market-implied odds. No major synoptic changes or measurement revisions are expected before resolution.
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
$15,858End 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.**Trader sentiment for Cape Town's August 21 high clusters tightly around 20–22°C because official forecasts and model runs converge on a mild winter peak near 20–21°C under stable high-pressure conditions.** Multiple sources, including SA Weather Service guidance and numerical models, indicate a dry, partly sunny day with light southerly winds, allowing afternoon temperatures to reach 19–21°C at representative stations like Cape Town International Airport.
Hourly profiles show gradual warming from morning lows near 9–12°C to a midday/afternoon maximum, with some runs peaking at 21°C around 15:00 local time before cooling. Slight model spread—arising from differences in cloud cover timing, wind shifts, or localized urban effects—keeps 20°C and 22°C viable but secondary. Historical August averages (roughly 18°C) provide context, yet today's clearer conditions support the modest upward nudge reflected in market-implied odds. No major synoptic changes or measurement revisions are expected before resolution.
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
$15,858End Date
Aug 21, 2026Market Opened
Aug 19, 2026, 12:57 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...**Trader sentiment for Cape Town's August 21 high clusters tightly around 20–22°C because official forecasts and model runs converge on a mild winter peak near 20–21°C under stable high-pressure conditions.** Multiple sources, including SA Weather Service guidance and numerical models, indicate a dry, partly sunny day with light southerly winds, allowing afternoon temperatures to reach 19–21°C at representative stations like Cape Town International Airport. Hourly profiles show gradual warming from morning lows near 9–12°C to a midday/afternoon maximum, with some runs peaking at 21°C around 15:00 local time before cooling. Slight model spread—arising from differences in cloud cover timing, wind shifts, or localized urban effects—keeps 20°C and 22°C viable but secondary. Historical August averages (roughly 18°C) provide context, yet today's clearer conditions support the modest upward nudge reflected in market-implied odds. No major synoptic changes or measurement revisions are expected 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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