Trader consensus on Polymarket closely splits between 28°C (37.5%) and 27°C (36.5%) for São Paulo's highest temperature on May 1, reflecting latest forecasts from Climatempo (28°C max, partly cloudy with afternoon showers) and the city's Centro de Gerenciamento de Emergências Climáticas (27°C max, dry conditions). This razor-thin margin stems from model uncertainty over cloud cover and isolated precipitation, which could cap peak heating under a subtropical ridge amid autumn's typical cooling trend—historical May 1 highs average 23–24°C at INMET stations, though April's above-normal warmth persists with weak frontal influences. Watch for final INMET updates today, as official airport observations will resolve the market amid inherent short-term forecast divergence.
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 May 1?
Highest temperature in Sao Paulo on May 1?
28°C 38%
27°C 37%
26°C 16.6%
29°C 8%
$11,938 Vol.
$11,938 Vol.
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
17%
27°C
37%
28°C
38%
29°C
8%
30°C
2%
31°C
1%
32°C
<1%
33°C or higher
<1%
28°C 38%
27°C 37%
26°C 16.6%
29°C 8%
$11,938 Vol.
$11,938 Vol.
23°C or below
<1%
24°C
<1%
25°C
1%
26°C
17%
27°C
37%
28°C
38%
29°C
8%
30°C
2%
31°C
1%
32°C
<1%
33°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 Sao Paulo-Guarulhos International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR.
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, 12:06 AM ET
Resolution Source
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
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 Sao Paulo-Guarulhos International Airport Station once information is finalized, available here: https://www.wunderground.com/history/daily/br/guarulhos/SBGR.
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/br/guarulhos/SBGRResolver
0x69c47De9D...Trader consensus on Polymarket closely splits between 28°C (37.5%) and 27°C (36.5%) for São Paulo's highest temperature on May 1, reflecting latest forecasts from Climatempo (28°C max, partly cloudy with afternoon showers) and the city's Centro de Gerenciamento de Emergências Climáticas (27°C max, dry conditions). This razor-thin margin stems from model uncertainty over cloud cover and isolated precipitation, which could cap peak heating under a subtropical ridge amid autumn's typical cooling trend—historical May 1 highs average 23–24°C at INMET stations, though April's above-normal warmth persists with weak frontal influences. Watch for final INMET updates today, as official airport observations will resolve the market amid inherent short-term forecast divergence.
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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