Recent model runs from GFS, ECMWF, and regional Brazilian guidance show a warm, dry air mass advecting over São Paulo, supporting afternoon highs in the low-to-mid 30s °C on August 30 before a stronger cold front arrives early September. Trader probabilities cluster tightly around 30–32 °C because ensembles differ on the precise timing of increasing cloud cover, boundary-layer mixing, and any weak sea-breeze or convective development that could cap temperatures a degree or two lower. Low humidity and northerly flow favor strong daytime heating, yet historical August maxima near 28–30 °C and the approaching frontal timing introduce modest downside risk, keeping the distribution narrow.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Sao Paulo on August 30?
Highest temperature in Sao Paulo on August 30?
31°C 22%
30°C 21%
32°C 18%
33°C 13%
NEW
NEW
Aug 30, 2026
28°C or below
6%
29°C
10%
30°C
21%
31°C
22%
32°C
18%
33°C
13%
34°C
8%
35°C
4%
36°C
2%
37°C
<1%
38°C or higher
<1%
31°C 22%
30°C 21%
32°C 18%
33°C 13%
NEW
NEW
Aug 30, 2026
28°C or below
$507 Vol.
6%
29°C
$86 Vol.
10%
30°C
$459 Vol.
21%
31°C
$217 Vol.
22%
32°C
$449 Vol.
18%
33°C
$45 Vol.
13%
34°C
$359 Vol.
8%
35°C
$83 Vol.
4%
36°C
$72 Vol.
2%
37°C
$310 Vol.
<1%
38°C or higher
$1,172 Vol.
<1%
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.Recent model runs from GFS, ECMWF, and regional Brazilian guidance show a warm, dry air mass advecting over São Paulo, supporting afternoon highs in the low-to-mid 30s °C on August 30 before a stronger cold front arrives early September. Trader probabilities cluster tightly around 30–32 °C because ensembles differ on the precise timing of increasing cloud cover, boundary-layer mixing, and any weak sea-breeze or convective development that could cap temperatures a degree or two lower. Low humidity and northerly flow favor strong daytime heating, yet historical August maxima near 28–30 °C and the approaching frontal timing introduce modest downside risk, keeping the distribution narrow.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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 28, 2026, 2:55 PM ET
Volume
$3,760End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.Recent model runs from GFS, ECMWF, and regional Brazilian guidance show a warm, dry air mass advecting over São Paulo, supporting afternoon highs in the low-to-mid 30s °C on August 30 before a stronger cold front arrives early September. Trader probabilities cluster tightly around 30–32 °C because ensembles differ on the precise timing of increasing cloud cover, boundary-layer mixing, and any weak sea-breeze or convective development that could cap temperatures a degree or two lower. Low humidity and northerly flow favor strong daytime heating, yet historical August maxima near 28–30 °C and the approaching frontal timing introduce modest downside risk, keeping the distribution narrow.
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 30 Aug '26.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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.
The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=sbgr
If NOAA data for the observation date is unavailable by 11:59 PM ET on the day following the observation date, the Weather Underground Daily Observations table will be used as the resolution source.
To toggle between Fahrenheit and Celsius, click the "Switch to Metric Units" button until the relevant table displays °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
$3,760End Date
Aug 30, 2026Market Opened
Aug 28, 2026, 2:55 PM ETResolution Source
https://www.weather.gov/wrh/timeseries?site=sbgrResolver
0x69c47De9D...Recent model runs from GFS, ECMWF, and regional Brazilian guidance show a warm, dry air mass advecting over São Paulo, supporting afternoon highs in the low-to-mid 30s °C on August 30 before a stronger cold front arrives early September. Trader probabilities cluster tightly around 30–32 °C because ensembles differ on the precise timing of increasing cloud cover, boundary-layer mixing, and any weak sea-breeze or convective development that could cap temperatures a degree or two lower. Low humidity and northerly flow favor strong daytime heating, yet historical August maxima near 28–30 °C and the approaching frontal timing introduce modest downside risk, keeping the distribution narrow.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
Beware of external links.
Beware of external links.
Frequently Asked Questions