Trader consensus on Polymarket has locked in 18°C as the highest temperature at Cape Town International Airport on May 11, 2026, with 100% implied probability, reflecting verified observational data from the South African Weather Service (SAWS) station amid a potent cold front. SAWS advisories warned of disruptive rain, gusts up to 78 km/h, and storm surge, which brought persistent low clouds, showers, and southerly winds that sharply curtailed solar heating and daytime warming—METAR reports showed temperatures peaking at 18°C before dropping amid precipitation. Typical May highs average 20–22°C, but frontal passages in autumn often suppress peaks by 2–4°C; model ensembles from SAWS accurately forecasted this outcome. Revision would require official data correction, improbable given post-event confirmation.
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 May 11?
Highest temperature in Cape Town on May 11?
18°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$61,136 Vol.
$61,136 Vol.
May 11, 2026
12°C or below
No
13°C
No
14°C
No
15°C
No
16°C
No
17°C
No
18°C
Yes
19°C
No
20°C
No
21°C
No
22°C or higher
No
18°C 100.0%
12°C or below <1%
13°C <1%
14°C <1%
$61,136 Vol.
$61,136 Vol.
May 11, 2026
12°C or below
$3,751 Vol.
No
13°C
$5,414 Vol.
No
14°C
$6,992 Vol.
No
15°C
$4,692 Vol.
No
16°C
$4,936 Vol.
No
17°C
$7,110 Vol.
No
18°C
$11,072 Vol.
Yes
19°C
$10,130 Vol.
No
20°C
$2,908 Vol.
No
21°C
$2,257 Vol.
No
22°C or higher
$1,874 Vol.
No
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 11 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Cape Town International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader consensus on Polymarket has locked in 18°C as the highest temperature at Cape Town International Airport on May 11, 2026, with 100% implied probability, reflecting verified observational data from the South African Weather Service (SAWS) station amid a potent cold front. SAWS advisories warned of disruptive rain, gusts up to 78 km/h, and storm surge, which brought persistent low clouds, showers, and southerly winds that sharply curtailed solar heating and daytime warming—METAR reports showed temperatures peaking at 18°C before dropping amid precipitation. Typical May highs average 20–22°C, but frontal passages in autumn often suppress peaks by 2–4°C; model ensembles from SAWS accurately forecasted this outcome. Revision would require official data correction, improbable given post-event confirmation.
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 11 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Cape Town International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Cape Town International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Market Opened: May 9, 2026, 3:47 AM ET
Volume
$61,136End Date
May 11, 2026Market Opened
May 9, 2026, 3:47 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 to the temperature range that contains the highest temperature recorded at the Cape Town International Airport Station in degrees Celsius on 11 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Cape Town International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.Trader consensus on Polymarket has locked in 18°C as the highest temperature at Cape Town International Airport on May 11, 2026, with 100% implied probability, reflecting verified observational data from the South African Weather Service (SAWS) station amid a potent cold front. SAWS advisories warned of disruptive rain, gusts up to 78 km/h, and storm surge, which brought persistent low clouds, showers, and southerly winds that sharply curtailed solar heating and daytime warming—METAR reports showed temperatures peaking at 18°C before dropping amid precipitation. Typical May highs average 20–22°C, but frontal passages in autumn often suppress peaks by 2–4°C; model ensembles from SAWS accurately forecasted this outcome. Revision would require official data correction, improbable given post-event confirmation.
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 11 May '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Cape Town International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day by the Forecast for the Cape Town International Airport Station once information is finalized, 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 to "Yes" until all data for this date has been finalized.
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.
Any revisions to temperatures recorded after data is finalized for this market's timeframe will not be considered for this market's resolution.
Volume
$61,136End Date
May 11, 2026Market Opened
May 9, 2026, 3:47 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Outcome proposed: No
No dispute
Final outcome: No
Trader consensus on Polymarket has locked in 18°C as the highest temperature at Cape Town International Airport on May 11, 2026, with 100% implied probability, reflecting verified observational data from the South African Weather Service (SAWS) station amid a potent cold front. SAWS advisories warned of disruptive rain, gusts up to 78 km/h, and storm surge, which brought persistent low clouds, showers, and southerly winds that sharply curtailed solar heating and daytime warming—METAR reports showed temperatures peaking at 18°C before dropping amid precipitation. Typical May highs average 20–22°C, but frontal passages in autumn often suppress peaks by 2–4°C; model ensembles from SAWS accurately forecasted this outcome. Revision would require official data correction, improbable given post-event confirmation.
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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