Cape Town’s late-winter Mediterranean climate typically produces daytime maxima of 17–18 °C in mid-August, with modest day-to-day variability driven by the strength and direction of the south-easterly flow and the extent of low-level cloud or marine layer. Current model guidance and extended forecasts point to an overcast or partly cloudy regime on 18 August with a predicted high near 18 °C, keeping the market’s narrow spread between the 18 °C (34.5 %) and 19 °C (31.5 %) outcomes tightly aligned. Any modest warming from clearer skies or a temporary shift in wind could push the reading to 19 °C, while persistent stratus or a late sea-breeze would favor the lower outcome; resolution hinges on the final observed maximum reported by official stations.
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 August 18?
Highest temperature in Cape Town on August 18?
18°C 35%
19°C 32%
17°C 14%
20°C 12%
NEW
NEW
Aug 18, 2026
13°C or below
<1%
14°C
1%
15°C
1%
16°C
6%
17°C
14%
18°C
35%
19°C
32%
20°C
12%
21°C
6%
22°C
4%
23°C or higher
<1%
18°C 35%
19°C 32%
17°C 14%
20°C 12%
NEW
NEW
Aug 18, 2026
13°C or below
$17 Vol.
<1%
14°C
$13 Vol.
1%
15°C
$9 Vol.
1%
16°C
$126 Vol.
6%
17°C
$72 Vol.
14%
18°C
$185 Vol.
35%
19°C
$63 Vol.
32%
20°C
$1 Vol.
12%
21°C
$54 Vol.
6%
22°C
$26 Vol.
4%
23°C or higher
$22 Vol.
<1%
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 18 Aug '26.
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.Cape Town’s late-winter Mediterranean climate typically produces daytime maxima of 17–18 °C in mid-August, with modest day-to-day variability driven by the strength and direction of the south-easterly flow and the extent of low-level cloud or marine layer. Current model guidance and extended forecasts point to an overcast or partly cloudy regime on 18 August with a predicted high near 18 °C, keeping the market’s narrow spread between the 18 °C (34.5 %) and 19 °C (31.5 %) outcomes tightly aligned. Any modest warming from clearer skies or a temporary shift in wind could push the reading to 19 °C, while persistent stratus or a late sea-breeze would favor the lower outcome; resolution hinges on the final observed maximum reported by official stations.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 18 Aug '26.
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.
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 18 Aug '26.
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: Aug 16, 2026, 12:58 AM ET
Volume
$588End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 18 Aug '26.
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.Cape Town’s late-winter Mediterranean climate typically produces daytime maxima of 17–18 °C in mid-August, with modest day-to-day variability driven by the strength and direction of the south-easterly flow and the extent of low-level cloud or marine layer. Current model guidance and extended forecasts point to an overcast or partly cloudy regime on 18 August with a predicted high near 18 °C, keeping the market’s narrow spread between the 18 °C (34.5 %) and 19 °C (31.5 %) outcomes tightly aligned. Any modest warming from clearer skies or a temporary shift in wind could push the reading to 19 °C, while persistent stratus or a late sea-breeze would favor the lower outcome; resolution hinges on the final observed maximum reported by official stations.
This market will resolve based on the highest temperature recorded in the 'Daily Observations' table on Weather Underground, not the figure displayed in the 'Day High & Low' summary section; in the event of any discrepancy between the two, the Daily Observations table shall be the primary resolution source not the Day High & Low section.
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 18 Aug '26.
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.
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 18 Aug '26.
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.
Volume
$588End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:58 AM ETResolution Source
https://www.wunderground.com/history/daily/za/matroosfontein/FACTResolver
0x69c47De9D...Cape Town’s late-winter Mediterranean climate typically produces daytime maxima of 17–18 °C in mid-August, with modest day-to-day variability driven by the strength and direction of the south-easterly flow and the extent of low-level cloud or marine layer. Current model guidance and extended forecasts point to an overcast or partly cloudy regime on 18 August with a predicted high near 18 °C, keeping the market’s narrow spread between the 18 °C (34.5 %) and 19 °C (31.5 %) outcomes tightly aligned. Any modest warming from clearer skies or a temporary shift in wind could push the reading to 19 °C, while persistent stratus or a late sea-breeze would favor the lower outcome; resolution hinges on the final observed maximum reported by official stations.
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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