Recent model guidance from sources like the South African Weather Service and extended forecasts indicates mild post-frontal conditions over Cape Town for August 20, with expected highs near 17–19°C under partly cloudy skies and light southerly winds. Earlier August cold fronts have cleared, allowing stabilization behind an approaching Atlantic high that limits strong advection or cloud cover, while typical winter climatology places mean August maxima around 17–18°C. Minor differences among leading outcomes hinge on exact timing of any residual moisture, local sea-breeze effects, or slight variations in model runs for boundary-layer warming. Traders appear to weigh the narrow spread between 18°C and 19°C most heavily given the short time to resolution and inherent uncertainty in 48-hour surface temperature forecasts.
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 20?
Highest temperature in Cape Town on August 20?
18°C 27%
19°C 26%
17°C 16%
20°C 14%
NEW
NEW
Aug 20, 2026
13°C or below
<1%
14°C
1%
15°C
1%
16°C
12%
17°C
16%
18°C
27%
19°C
26%
20°C
14%
21°C
11%
22°C
3%
23°C or higher
3%
18°C 27%
19°C 26%
17°C 16%
20°C 14%
NEW
NEW
Aug 20, 2026
13°C or below
$5 Vol.
<1%
14°C
$5 Vol.
1%
15°C
$5 Vol.
1%
16°C
$15 Vol.
12%
17°C
$0 Vol.
16%
18°C
$0 Vol.
27%
19°C
$0 Vol.
26%
20°C
$0 Vol.
14%
21°C
$6 Vol.
11%
22°C
$10 Vol.
3%
23°C or higher
$5 Vol.
3%
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 20 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 model guidance from sources like the South African Weather Service and extended forecasts indicates mild post-frontal conditions over Cape Town for August 20, with expected highs near 17–19°C under partly cloudy skies and light southerly winds. Earlier August cold fronts have cleared, allowing stabilization behind an approaching Atlantic high that limits strong advection or cloud cover, while typical winter climatology places mean August maxima around 17–18°C. Minor differences among leading outcomes hinge on exact timing of any residual moisture, local sea-breeze effects, or slight variations in model runs for boundary-layer warming. Traders appear to weigh the narrow spread between 18°C and 19°C most heavily given the short time to resolution and inherent uncertainty in 48-hour surface temperature forecasts.
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 20 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 20 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 18, 2026, 12:58 AM ET
Volume
$51End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:58 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 20 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 model guidance from sources like the South African Weather Service and extended forecasts indicates mild post-frontal conditions over Cape Town for August 20, with expected highs near 17–19°C under partly cloudy skies and light southerly winds. Earlier August cold fronts have cleared, allowing stabilization behind an approaching Atlantic high that limits strong advection or cloud cover, while typical winter climatology places mean August maxima around 17–18°C. Minor differences among leading outcomes hinge on exact timing of any residual moisture, local sea-breeze effects, or slight variations in model runs for boundary-layer warming. Traders appear to weigh the narrow spread between 18°C and 19°C most heavily given the short time to resolution and inherent uncertainty in 48-hour surface temperature forecasts.
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 20 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 20 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
$51End Date
Aug 20, 2026Market Opened
Aug 18, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Recent model guidance from sources like the South African Weather Service and extended forecasts indicates mild post-frontal conditions over Cape Town for August 20, with expected highs near 17–19°C under partly cloudy skies and light southerly winds. Earlier August cold fronts have cleared, allowing stabilization behind an approaching Atlantic high that limits strong advection or cloud cover, while typical winter climatology places mean August maxima around 17–18°C. Minor differences among leading outcomes hinge on exact timing of any residual moisture, local sea-breeze effects, or slight variations in model runs for boundary-layer warming. Traders appear to weigh the narrow spread between 18°C and 19°C most heavily given the short time to resolution and inherent uncertainty in 48-hour surface temperature forecasts.
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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