Recent forecast guidance from South African Weather Service models points to a maximum near 18°C in Cape Town on August 18, aligning with the seasonal mid-winter average of 16–18°C under light northwesterly flow, partial cloud cover, and modest Atlantic moisture that curbs daytime heating. These stable synoptic conditions explain the market's tight clustering around 17–19°C, with 18°C holding the strongest implied probability as the baseline outcome. Minor model variations or unexpected clearing could nudge readings toward 19°C, while any increase in cloud or onshore influence supports 17°C. Historical August data shows limited extremes, reinforcing trader focus on these narrow thresholds ahead of final observations.
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?
18°C 50%
19°C 30%
17°C 16%
16°C 5%
NEW
$13,934 Vol.
NEW
$13,934 Vol.
Aug 18, 2026
13°C or below
<1%
14°C
<1%
15°C
<1%
16°C
5%
17°C
16%
18°C
50%
19°C
30%
20°C
1%
21°C
<1%
22°C
<1%
23°C or higher
<1%
18°C 50%
19°C 30%
17°C 16%
16°C 5%
NEW
$13,934 Vol.
NEW
$13,934 Vol.
Aug 18, 2026
13°C or below
$684 Vol.
<1%
14°C
$350 Vol.
<1%
15°C
$851 Vol.
<1%
16°C
$1,914 Vol.
5%
17°C
$2,477 Vol.
16%
18°C
$2,662 Vol.
50%
19°C
$1,612 Vol.
30%
20°C
$1,573 Vol.
1%
21°C
$842 Vol.
<1%
22°C
$815 Vol.
<1%
23°C or higher
$155 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 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.Recent forecast guidance from South African Weather Service models points to a maximum near 18°C in Cape Town on August 18, aligning with the seasonal mid-winter average of 16–18°C under light northwesterly flow, partial cloud cover, and modest Atlantic moisture that curbs daytime heating. These stable synoptic conditions explain the market's tight clustering around 17–19°C, with 18°C holding the strongest implied probability as the baseline outcome. Minor model variations or unexpected clearing could nudge readings toward 19°C, while any increase in cloud or onshore influence supports 17°C. Historical August data shows limited extremes, reinforcing trader focus on these narrow thresholds ahead of final observations.
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
$13,934End Date
Aug 18, 2026Market Opened
Aug 16, 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 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.Recent forecast guidance from South African Weather Service models points to a maximum near 18°C in Cape Town on August 18, aligning with the seasonal mid-winter average of 16–18°C under light northwesterly flow, partial cloud cover, and modest Atlantic moisture that curbs daytime heating. These stable synoptic conditions explain the market's tight clustering around 17–19°C, with 18°C holding the strongest implied probability as the baseline outcome. Minor model variations or unexpected clearing could nudge readings toward 19°C, while any increase in cloud or onshore influence supports 17°C. Historical August data shows limited extremes, reinforcing trader focus on these narrow thresholds ahead of final observations.
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
$13,934End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Recent forecast guidance from South African Weather Service models points to a maximum near 18°C in Cape Town on August 18, aligning with the seasonal mid-winter average of 16–18°C under light northwesterly flow, partial cloud cover, and modest Atlantic moisture that curbs daytime heating. These stable synoptic conditions explain the market's tight clustering around 17–19°C, with 18°C holding the strongest implied probability as the baseline outcome. Minor model variations or unexpected clearing could nudge readings toward 19°C, while any increase in cloud or onshore influence supports 17°C. Historical August data shows limited extremes, reinforcing trader focus on these narrow thresholds ahead of final observations.
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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