Recent forecasts for Cape Town on August 15 show high uncertainty among global and regional models, with ensemble spreads keeping the highest temperature clustered around 18–20 °C and explaining the tightly bunched market-implied odds. Mid-August climatology in the region features cool Benguela Current influence, frequent westerly cold fronts, and variable ridging that can produce modest warming or rapid cooling depending on exact frontal timing and wind direction. Key variables now include the strength and passage of an approaching Atlantic low, potential berg wind episodes, and daytime cloud cover that modulates insolation. Updated runs from the South African Weather Service and international centers expected in the next 24–48 hours will likely narrow the range before the market resolves.
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 15?
20°C 41%
18°C 38%
19°C 31%
21°C 18%
14°C or below
<1%
15°C
1%
16°C
2%
17°C
7%
18°C
24%
19°C
29%
20°C
30%
21°C
18%
22°C
6%
23°C
2%
24°C or higher
<1%
20°C 41%
18°C 38%
19°C 31%
21°C 18%
14°C or below
<1%
15°C
1%
16°C
2%
17°C
7%
18°C
24%
19°C
29%
20°C
30%
21°C
18%
22°C
6%
23°C
2%
24°C or higher
<1%
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 15 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 13, 2026, 12:58 AM ET
Resolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...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 15 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.
Resolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Recent forecasts for Cape Town on August 15 show high uncertainty among global and regional models, with ensemble spreads keeping the highest temperature clustered around 18–20 °C and explaining the tightly bunched market-implied odds. Mid-August climatology in the region features cool Benguela Current influence, frequent westerly cold fronts, and variable ridging that can produce modest warming or rapid cooling depending on exact frontal timing and wind direction. Key variables now include the strength and passage of an approaching Atlantic low, potential berg wind episodes, and daytime cloud cover that modulates insolation. Updated runs from the South African Weather Service and international centers expected in the next 24–48 hours will likely narrow the range before the market resolves.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated

Beware of external links.
Beware of external links.
Frequently Asked Questions