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Highest temperature in Sao Paulo on April 13?

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Highest temperature in Sao Paulo on April 13?

28°C or higher 39%

27°C 33%

26°C 18%

25°C 7.2%

Polymarket
NEW

28°C or higher 39%

27°C 33%

26°C 18%

25°C 7.2%

Polymarket
NEW

18°C or below

$433 Vol.

<1%

19°C

$587 Vol.

<1%

20°C

$535 Vol.

<1%

21°C

$1,272 Vol.

<1%

22°C

$909 Vol.

<1%

23°C

$959 Vol.

1%

24°C

$756 Vol.

3%

25°C

$691 Vol.

7%

26°C

$672 Vol.

18%

27°C

$631 Vol.

33%

28°C or higher

$1,353 Vol.

39%

This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 13 Apr '26. 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.Trader consensus on Polymarket reflects tight uncertainty between 28°C or higher (40%) and 27°C (35.5%), driven by the latest INMET and CPTEC forecast models projecting daily maxima of 27–28°C under partly cloudy skies and light winds for São Paulo on April 13. These align with autumn climatology, where average highs hover around 26°C amid subsiding frontal systems from earlier April rains, allowing greater solar insolation and urban heat island effects to potentially nudge peaks upward. Key differentiators include model ensemble spreads—INMET leaning toward 28°C with minimal cloud interference, while CPTEC holds at 27°C—and diurnally varying humidity (around 50%), which could cap heating. Official station measurements from INMET will resolve the market, with final updates expected overnight.

This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 13 Apr '26.

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.
Volume
$8,787
End Date
Apr 13, 2026
Market Opened
Apr 9, 2026, 12:08 AM ET
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 13 Apr '26. 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.
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 13 Apr '26. 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.Trader consensus on Polymarket reflects tight uncertainty between 28°C or higher (40%) and 27°C (35.5%), driven by the latest INMET and CPTEC forecast models projecting daily maxima of 27–28°C under partly cloudy skies and light winds for São Paulo on April 13. These align with autumn climatology, where average highs hover around 26°C amid subsiding frontal systems from earlier April rains, allowing greater solar insolation and urban heat island effects to potentially nudge peaks upward. Key differentiators include model ensemble spreads—INMET leaning toward 28°C with minimal cloud interference, while CPTEC holds at 27°C—and diurnally varying humidity (around 50%), which could cap heating. Official station measurements from INMET will resolve the market, with final updates expected overnight.

This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 13 Apr '26.

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.
Volume
$8,787
End Date
Apr 13, 2026
Market Opened
Apr 9, 2026, 12:08 AM ET
This market will resolve to the temperature range that contains the highest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 13 Apr '26. 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.

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Frequently Asked Questions

"Highest temperature in Sao Paulo on April 13?" is a prediction market on Polymarket with 11 possible outcomes where traders buy and sell shares based on what they believe will happen. The current leading outcome is "28°C or higher" at 39%, followed by "27°C" at 33%. Prices reflect real-time crowd-sourced probabilities. For example, a share priced at 39¢ implies that the market collectively assigns a 39% chance to that outcome. These odds shift continuously as traders react to new developments and information. Shares in the correct outcome are redeemable for $1 each upon market resolution.

"Highest temperature in Sao Paulo on April 13?" is a newly created market on Polymarket, launched on Apr 9, 2026. As an early market, this is your opportunity to be among the first traders to set the odds and establish the market's initial price signals. You can also bookmark this page to track volume and trading activity as the market gains traction over time.

To trade on "Highest temperature in Sao Paulo on April 13?," browse the 11 available outcomes listed on this page. Each outcome displays a current price representing the market's implied probability. To take a position, select the outcome you believe is most likely, choose "Yes" to trade in favor of it or "No" to trade against it, enter your amount, and click "Trade." If your chosen outcome is correct when the market resolves, your "Yes" shares pay out $1 each. If it's incorrect, they pay out $0. You can also sell your shares at any time before resolution if you want to lock in a profit or cut a loss.

The current frontrunner for "Highest temperature in Sao Paulo on April 13?" is "28°C or higher" at 39%, meaning the market assigns a 39% chance to that outcome. The next closest outcome is "27°C" at 33%. These odds update in real-time as traders buy and sell shares, so they reflect the latest collective view of what's most likely to happen. Check back frequently or bookmark this page to follow how the odds shift as new information emerges.

The resolution rules for "Highest temperature in Sao Paulo on April 13?" define exactly what needs to happen for each outcome to be declared a winner — including the official data sources used to determine the result. You can review the complete resolution criteria in the "Rules" section on this page above the comments. We recommend reading the rules carefully before trading, as they specify the precise conditions, edge cases, and sources that govern how this market is settled.