Traders assign near-certainty to a 19°C maximum in Cape Town on August 18 because official forecasts from the South African Weather Service and regional models consistently project this peak under partly cloudy conditions with light southerly winds. A weak cold front has suppressed temperatures slightly below seasonal norms, aligning with historical August averages of 17–18°C while preventing warmer intrusions. This consensus draws from real-time observational data and ensemble runs showing limited diurnal heating. Only an unexpected late-day warming spike or station-specific measurement variation could shift the outcome, though current conditions make such deviations unlikely 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 18?
Highest temperature in Cape Town on August 18?
19°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$49,413 Vol.
$49,413 Vol.
Aug 18, 2026
13°C or below
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
No
19°C
Yes
20°C
No
21°C
No
22°C
No
23°C or higher
No
19°C 100.0%
13°C or below <1%
14°C <1%
15°C <1%
$49,413 Vol.
$49,413 Vol.
Aug 18, 2026
13°C or below
$684 Vol.
No
14°C
$1,386 Vol.
No
15°C
$2,625 Vol.
No
16°C
$2,975 Vol.
No
17°C
$6,292 Vol.
No
18°C
$11,592 Vol.
No
19°C
$5,555 Vol.
Yes
20°C
$5,824 Vol.
No
21°C
$3,989 Vol.
No
22°C
$2,907 Vol.
No
23°C or higher
$5,583 Vol.
No
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 18 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.Traders assign near-certainty to a 19°C maximum in Cape Town on August 18 because official forecasts from the South African Weather Service and regional models consistently project this peak under partly cloudy conditions with light southerly winds. A weak cold front has suppressed temperatures slightly below seasonal norms, aligning with historical August averages of 17–18°C while preventing warmer intrusions. This consensus draws from real-time observational data and ensemble runs showing limited diurnal heating. Only an unexpected late-day warming spike or station-specific measurement variation could shift the outcome, though current conditions make such deviations unlikely 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 18 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 18 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 16, 2026, 12:58 AM ET
Volume
$49,413End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
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 18 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.Traders assign near-certainty to a 19°C maximum in Cape Town on August 18 because official forecasts from the South African Weather Service and regional models consistently project this peak under partly cloudy conditions with light southerly winds. A weak cold front has suppressed temperatures slightly below seasonal norms, aligning with historical August averages of 17–18°C while preventing warmer intrusions. This consensus draws from real-time observational data and ensemble runs showing limited diurnal heating. Only an unexpected late-day warming spike or station-specific measurement variation could shift the outcome, though current conditions make such deviations unlikely 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 18 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 18 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
$49,413End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Traders assign near-certainty to a 19°C maximum in Cape Town on August 18 because official forecasts from the South African Weather Service and regional models consistently project this peak under partly cloudy conditions with light southerly winds. A weak cold front has suppressed temperatures slightly below seasonal norms, aligning with historical August averages of 17–18°C while preventing warmer intrusions. This consensus draws from real-time observational data and ensemble runs showing limited diurnal heating. Only an unexpected late-day warming spike or station-specific measurement variation could shift the outcome, though current conditions make such deviations unlikely 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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