Trader consensus on Polymarket heavily favors 18°C (48.5% implied probability) as Cape Town's highest temperature on May 1, driven by the South African Weather Service (SAWS) latest forecast of a maximum 18°C amid partly cloudy skies, cool southerly winds, and isolated showers. GFS and ECMWF model ensembles corroborate this clustering at 17–19°C, reflecting a sharp cooling trend from late April's highs near 28°C influenced by autumnal atmospheric shifts and persistent southwesterly flows channeling cooler Antarctic air. This positions outcomes below the historical May 1 average of 19.5°C, though minor model divergences and shower variability introduce uncertainty ahead of resolution via official Cape Town International Airport observations. New SAWS updates expected within 24 hours could refine these odds.
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 46%
19°C 31%
17°C 23%
20°C 3.1%
13°C or below
<1%
14°C
<1%
15°C
1%
16°C
2%
17°C
23%
18°C
46%
19°C
31%
20°C
3%
21°C
1%
22°C
1%
23°C or higher
<1%
18°C 46%
19°C 31%
17°C 23%
20°C 3.1%
13°C or below
<1%
14°C
<1%
15°C
1%
16°C
2%
17°C
23%
18°C
46%
19°C
31%
20°C
3%
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 18°C (48.5% implied probability) as Cape Town's highest temperature on May 1, driven by the South African Weather Service (SAWS) latest forecast of a maximum 18°C amid partly cloudy skies, cool southerly winds, and isolated showers. GFS and ECMWF model ensembles corroborate this clustering at 17–19°C, reflecting a sharp cooling trend from late April's highs near 28°C influenced by autumnal atmospheric shifts and persistent southwesterly flows channeling cooler Antarctic air. This positions outcomes below the historical May 1 average of 19.5°C, though minor model divergences and shower variability introduce uncertainty ahead of resolution via official Cape Town International Airport observations. New SAWS updates expected within 24 hours could refine these odds.
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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