Trader consensus on Polymarket heavily favors an 18°C high in Cape Town on May 1 (46% implied probability), closely followed by 19°C (31%) and 17°C (22.5%), reflecting the latest South African Weather Service (SAWS) forecasts and numerical model runs from GFS and ECMWF showing afternoon peaks around 18°C amid a cut-off low pressure system ushering in cloudy conditions, moderate northerly winds, and scattered showers. This autumnal cooling trend suppresses temperatures below the historical May 1 average of about 19°C, with recent warnings for severe thunderstorms and travel disruptions over the Western Cape reinforcing subdued highs. Ensemble model agreement is strong, though minor forecast tweaks could emerge overnight; official observations will resolve the market post-midnight UTC.
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 1?
Highest temperature in Cape Town on May 1?
18°C 47%
19°C 32%
17°C 23%
20°C 2.3%
13°C or below
<1%
14°C
<1%
15°C
1%
16°C
2%
17°C
23%
18°C
47%
19°C
32%
20°C
2%
21°C
1%
22°C
1%
23°C or higher
<1%
18°C 47%
19°C 32%
17°C 23%
20°C 2.3%
13°C or below
<1%
14°C
<1%
15°C
1%
16°C
2%
17°C
23%
18°C
47%
19°C
32%
20°C
2%
21°C
1%
22°C
1%
23°C or higher
<1%
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: Apr 29, 2026, 12:11 AM ET
Resolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...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.
Resolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Trader consensus on Polymarket heavily favors an 18°C high in Cape Town on May 1 (46% implied probability), closely followed by 19°C (31%) and 17°C (22.5%), reflecting the latest South African Weather Service (SAWS) forecasts and numerical model runs from GFS and ECMWF showing afternoon peaks around 18°C amid a cut-off low pressure system ushering in cloudy conditions, moderate northerly winds, and scattered showers. This autumnal cooling trend suppresses temperatures below the historical May 1 average of about 19°C, with recent warnings for severe thunderstorms and travel disruptions over the Western Cape reinforcing subdued highs. Ensemble model agreement is strong, though minor forecast tweaks could emerge overnight; official observations will resolve the market post-midnight UTC.
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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