Recent South African Weather Service guidance points to partly cloudy and cool conditions across the Western Cape through July 20, with official model runs supporting daytime maxima clustered near the seasonal average of 17 °C. This keeps the market focused on the tightly bunched 16–18 °C outcomes, where small differences in cloud cover, wind strength from the Atlantic, or the timing of any weak frontal passage can shift the daily high by 1–2 °C. The Benguela Current’s cooling influence and typical mid-winter radiative cooling under clear spells further narrow the expected range, while longer-range ensemble spread prevents stronger consensus on an 18 °C or higher reading. Updated SAWS briefings and local model runs over the next 48 hours remain the key catalysts for any odds movement.
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 July 20?
17°C 43%
16°C 32%
18°C 17%
15°C 10%
$10,656 Vol.
$10,656 Vol.
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
1%
15°C
10%
16°C
32%
17°C
43%
18°C
17%
19°C
2%
20°C
<1%
21°C or higher
<1%
17°C 43%
16°C 32%
18°C 17%
15°C 10%
$10,656 Vol.
$10,656 Vol.
11°C or below
<1%
12°C
<1%
13°C
<1%
14°C
1%
15°C
10%
16°C
32%
17°C
43%
18°C
17%
19°C
2%
20°C
<1%
21°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 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: Jul 18, 2026, 1:04 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 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 South African Weather Service guidance points to partly cloudy and cool conditions across the Western Cape through July 20, with official model runs supporting daytime maxima clustered near the seasonal average of 17 °C. This keeps the market focused on the tightly bunched 16–18 °C outcomes, where small differences in cloud cover, wind strength from the Atlantic, or the timing of any weak frontal passage can shift the daily high by 1–2 °C. The Benguela Current’s cooling influence and typical mid-winter radiative cooling under clear spells further narrow the expected range, while longer-range ensemble spread prevents stronger consensus on an 18 °C or higher reading. Updated SAWS briefings and local model runs over the next 48 hours remain the key catalysts for any odds movement.
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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