Recent South African Weather Service outlooks and ensemble model guidance for the Western Cape point to fine, partly cloudy conditions on August 17, with daytime maxima centered near 18–19 °C, aligning with the market’s leading 19 °C (37.5 %) and 20 °C (24 %) shares. These probabilities reflect climatological August averages of roughly 17 °C, tempered by short-term factors such as weak onshore flow and limited cloud cover that can add 1–2 °C above seasonal norms. Cooler outcomes near 18 °C (20.5 %) gain support if morning fog or stronger southerly winds develop, while the low odds for 21 °C or higher mirror the rarity of significant warm advection this early in spring. Updated model runs and official maximum-temperature observations from Cape Town International Airport will determine final 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 17?
Highest temperature in Cape Town on August 17?
19°C 37%
20°C 22%
18°C 21%
21°C 9%
NEW
NEW
Aug 17, 2026
14°C or below
<1%
15°C
1%
16°C
3%
17°C
8%
18°C
21%
19°C
37%
20°C
22%
21°C
9%
22°C
3%
23°C
1%
24°C or higher
<1%
19°C 37%
20°C 22%
18°C 21%
21°C 9%
NEW
NEW
Aug 17, 2026
14°C or below
$16 Vol.
<1%
15°C
$6 Vol.
1%
16°C
$72 Vol.
3%
17°C
$159 Vol.
8%
18°C
$162 Vol.
21%
19°C
$119 Vol.
37%
20°C
$1,049 Vol.
22%
21°C
$266 Vol.
9%
22°C
$145 Vol.
3%
23°C
$190 Vol.
1%
24°C or higher
$696 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 17 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 South African Weather Service outlooks and ensemble model guidance for the Western Cape point to fine, partly cloudy conditions on August 17, with daytime maxima centered near 18–19 °C, aligning with the market’s leading 19 °C (37.5 %) and 20 °C (24 %) shares. These probabilities reflect climatological August averages of roughly 17 °C, tempered by short-term factors such as weak onshore flow and limited cloud cover that can add 1–2 °C above seasonal norms. Cooler outcomes near 18 °C (20.5 %) gain support if morning fog or stronger southerly winds develop, while the low odds for 21 °C or higher mirror the rarity of significant warm advection this early in spring. Updated model runs and official maximum-temperature observations from Cape Town International Airport will determine final 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 17 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 17 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 15, 2026, 4:08 PM ET
Volume
$2,227End Date
Aug 17, 2026Market Opened
Aug 15, 2026, 4:08 PM 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 17 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 South African Weather Service outlooks and ensemble model guidance for the Western Cape point to fine, partly cloudy conditions on August 17, with daytime maxima centered near 18–19 °C, aligning with the market’s leading 19 °C (37.5 %) and 20 °C (24 %) shares. These probabilities reflect climatological August averages of roughly 17 °C, tempered by short-term factors such as weak onshore flow and limited cloud cover that can add 1–2 °C above seasonal norms. Cooler outcomes near 18 °C (20.5 %) gain support if morning fog or stronger southerly winds develop, while the low odds for 21 °C or higher mirror the rarity of significant warm advection this early in spring. Updated model runs and official maximum-temperature observations from Cape Town International Airport will determine final 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 17 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 17 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
$2,227End Date
Aug 17, 2026Market Opened
Aug 15, 2026, 4:08 PM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Recent South African Weather Service outlooks and ensemble model guidance for the Western Cape point to fine, partly cloudy conditions on August 17, with daytime maxima centered near 18–19 °C, aligning with the market’s leading 19 °C (37.5 %) and 20 °C (24 %) shares. These probabilities reflect climatological August averages of roughly 17 °C, tempered by short-term factors such as weak onshore flow and limited cloud cover that can add 1–2 °C above seasonal norms. Cooler outcomes near 18 °C (20.5 %) gain support if morning fog or stronger southerly winds develop, while the low odds for 21 °C or higher mirror the rarity of significant warm advection this early in spring. Updated model runs and official maximum-temperature observations from Cape Town International Airport will determine final 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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