Singapore’s mid-August daily maximum temperatures typically peak near 31–33°C under southwest monsoon conditions featuring high humidity, variable cloud cover, and moderate sea breezes that limit extreme heating. Historical observations from Singapore’s Changi station and urban networks show 33°C as the most frequent outcome in this period, aligning with the market’s strong 73% implied probability. Recent 2026 data through early August recorded maxima of 32–33°C with no major heat-wave signals, while long-term warming of 0.24°C per decade has nudged baselines higher without altering day-to-day variability. Forecast guidance points to similar steering patterns and limited convective suppression today, keeping 34°C or above at low probability.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Singapore on August 18?
Highest temperature in Singapore on August 18?
33°C 80%
32°C 16%
34°C 7%
35°C <1%
NEW
$36,391 Vol.
NEW
$36,391 Vol.
Aug 18, 2026
28°C or below
<1%
29°C
<1%
30°C
<1%
31°C
<1%
32°C
16%
33°C
80%
34°C
7%
35°C
1%
36°C
<1%
37°C
<1%
38°C or higher
<1%
33°C 80%
32°C 16%
34°C 7%
35°C <1%
NEW
$36,391 Vol.
NEW
$36,391 Vol.
Aug 18, 2026
28°C or below
$258 Vol.
<1%
29°C
$1,974 Vol.
<1%
30°C
$2,571 Vol.
<1%
31°C
$4,196 Vol.
<1%
32°C
$9,429 Vol.
16%
33°C
$8,905 Vol.
80%
34°C
$5,299 Vol.
7%
35°C
$1,925 Vol.
1%
36°C
$1,318 Vol.
<1%
37°C
$258 Vol.
<1%
38°C or higher
$258 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 Singapore Changi 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 Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
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.Singapore’s mid-August daily maximum temperatures typically peak near 31–33°C under southwest monsoon conditions featuring high humidity, variable cloud cover, and moderate sea breezes that limit extreme heating. Historical observations from Singapore’s Changi station and urban networks show 33°C as the most frequent outcome in this period, aligning with the market’s strong 73% implied probability. Recent 2026 data through early August recorded maxima of 32–33°C with no major heat-wave signals, while long-term warming of 0.24°C per decade has nudged baselines higher without altering day-to-day variability. Forecast guidance points to similar steering patterns and limited convective suppression today, keeping 34°C or above at low probability.
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 Singapore Changi 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 Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
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 Singapore Changi 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 Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
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, 12:56 AM ET
Volume
$36,391End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/sg/singapore/WSSSResolver
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 Singapore Changi 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 Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
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.Singapore’s mid-August daily maximum temperatures typically peak near 31–33°C under southwest monsoon conditions featuring high humidity, variable cloud cover, and moderate sea breezes that limit extreme heating. Historical observations from Singapore’s Changi station and urban networks show 33°C as the most frequent outcome in this period, aligning with the market’s strong 73% implied probability. Recent 2026 data through early August recorded maxima of 32–33°C with no major heat-wave signals, while long-term warming of 0.24°C per decade has nudged baselines higher without altering day-to-day variability. Forecast guidance points to similar steering patterns and limited convective suppression today, keeping 34°C or above at low probability.
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 Singapore Changi 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 Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
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 Singapore Changi 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 Singapore Changi Airport Station, available here: https://www.wunderground.com/history/daily/sg/singapore/WSSS.
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
$36,391End Date
Aug 18, 2026Market Opened
Aug 16, 2026, 12:56 AM ETResolution Source
https://www.wunderground.com/history/daily/sg/singapore/WSSSResolver
0x69c47De9D...Singapore’s mid-August daily maximum temperatures typically peak near 31–33°C under southwest monsoon conditions featuring high humidity, variable cloud cover, and moderate sea breezes that limit extreme heating. Historical observations from Singapore’s Changi station and urban networks show 33°C as the most frequent outcome in this period, aligning with the market’s strong 73% implied probability. Recent 2026 data through early August recorded maxima of 32–33°C with no major heat-wave signals, while long-term warming of 0.24°C per decade has nudged baselines higher without altering day-to-day variability. Forecast guidance points to similar steering patterns and limited convective suppression today, keeping 34°C or above at low probability.
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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