Recent forecasts from the South African Weather Service and global models indicate stable high-pressure conditions over the Western Cape, supporting a daytime maximum of 20°C in Cape Town on May 17 under mostly sunny autumn skies with light southeasterly winds. This aligns with mid-May climatology, where average highs range 18–21°C and sea surface temperatures near 17°C limit rapid warming. Market-implied odds near 99% for 20°C reflect trader consensus on these verified observations and minimal model spread, though an unexpected shift in wind patterns or localized cloud cover could still push readings to 21°C if afternoon heating exceeds current projections.
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 17?
Highest temperature in Cape Town on May 17?
20°C 99.6%
24°C or higher <1%
22°C <1%
23°C <1%
$18,014 Vol.
$18,014 Vol.
May 17, 2026
14°C or below
<1%
15°C
<1%
16°C
<1%
17°C
<1%
18°C
<1%
19°C
<1%
20°C
100%
21°C
<1%
22°C
<1%
23°C
<1%
24°C or higher
1%
20°C 99.6%
24°C or higher <1%
22°C <1%
23°C <1%
$18,014 Vol.
$18,014 Vol.
May 17, 2026
14°C or below
$534 Vol.
<1%
15°C
$787 Vol.
<1%
16°C
$1,520 Vol.
<1%
17°C
$2,021 Vol.
<1%
18°C
$2,433 Vol.
<1%
19°C
$2,509 Vol.
<1%
20°C
$2,508 Vol.
100%
21°C
$1,944 Vol.
<1%
22°C
$1,325 Vol.
<1%
23°C
$1,519 Vol.
<1%
24°C or higher
$922 Vol.
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 17 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.Recent forecasts from the South African Weather Service and global models indicate stable high-pressure conditions over the Western Cape, supporting a daytime maximum of 20°C in Cape Town on May 17 under mostly sunny autumn skies with light southeasterly winds. This aligns with mid-May climatology, where average highs range 18–21°C and sea surface temperatures near 17°C limit rapid warming. Market-implied odds near 99% for 20°C reflect trader consensus on these verified observations and minimal model spread, though an unexpected shift in wind patterns or localized cloud cover could still push readings to 21°C if afternoon heating exceeds current projections.
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 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 15, 2026, 12:06 AM ET
Volume
$18,014End Date
May 17, 2026Market Opened
May 15, 2026, 12:06 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTThis 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 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.Recent forecasts from the South African Weather Service and global models indicate stable high-pressure conditions over the Western Cape, supporting a daytime maximum of 20°C in Cape Town on May 17 under mostly sunny autumn skies with light southeasterly winds. This aligns with mid-May climatology, where average highs range 18–21°C and sea surface temperatures near 17°C limit rapid warming. Market-implied odds near 99% for 20°C reflect trader consensus on these verified observations and minimal model spread, though an unexpected shift in wind patterns or localized cloud cover could still push readings to 21°C if afternoon heating exceeds current projections.
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 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
$18,014End Date
May 17, 2026Market Opened
May 15, 2026, 12:06 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTRecent forecasts from the South African Weather Service and global models indicate stable high-pressure conditions over the Western Cape, supporting a daytime maximum of 20°C in Cape Town on May 17 under mostly sunny autumn skies with light southeasterly winds. This aligns with mid-May climatology, where average highs range 18–21°C and sea surface temperatures near 17°C limit rapid warming. Market-implied odds near 99% for 20°C reflect trader consensus on these verified observations and minimal model spread, though an unexpected shift in wind patterns or localized cloud cover could still push readings to 21°C if afternoon heating exceeds current projections.
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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