A cold front approaching São Paulo on August 21, 2026, is the main driver of market-implied odds clustered around 11–15 °C for the daily minimum. Official forecasts from Brazilian agencies highlight increased cloud cover, possible afternoon showers, and southeasterly winds strengthening overnight, all of which modulate radiative cooling and boundary-layer mixing. These conditions create genuine uncertainty between modest advection of cooler maritime air versus localized urban heat retention, producing closely matched probabilities for 11 °C, 13 °C, and 14 °C outcomes. Model runs differ on exact wind timing and precipitation intensity, key variables that will determine whether the low settles near 10–12 °C or remains closer to 15–16 °C before dawn.
Resumo experimental gerado por IA com dados do Polymarket. Isto não é aconselhamento de trading e não tem qualquer papel na resolução deste mercado. · AtualizadoTemperatura mais baixa em São Paulo no dia 21 de agosto?
14°C 36%
11°C 35%
12°C 35%
13°C 35%
9°C or below
2%
10°C
34%
11°C
35%
12°C
35%
13°C
35%
14°C
36%
15°C
35%
16°C
34%
17°C
1%
18°C
2%
19°C or higher
<1%
14°C 36%
11°C 35%
12°C 35%
13°C 35%
9°C or below
2%
10°C
34%
11°C
35%
12°C
35%
13°C
35%
14°C
36%
15°C
35%
16°C
34%
17°C
1%
18°C
2%
19°C or higher
<1%
This market will resolve to the temperature range that contains the lowest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, 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 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.
Mercado Aberto: Aug 20, 2026, 1:28 PM ET
Fonte de resolução
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...This market will resolve to the temperature range that contains the lowest temperature recorded at the Sao Paulo-Guarulhos International Airport Station in degrees Celsius on 21 Aug '26.
The resolution source for this market will be information from Wunderground, specifically the lowest temperature recorded for all times on this day for the Sao Paulo-Guarulhos International Airport Station, 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 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.
Fonte de resolução
https://www.wunderground.com/history/daily/br/guarulhos/SBGRResolver
0x69c47De9D...A cold front approaching São Paulo on August 21, 2026, is the main driver of market-implied odds clustered around 11–15 °C for the daily minimum. Official forecasts from Brazilian agencies highlight increased cloud cover, possible afternoon showers, and southeasterly winds strengthening overnight, all of which modulate radiative cooling and boundary-layer mixing. These conditions create genuine uncertainty between modest advection of cooler maritime air versus localized urban heat retention, producing closely matched probabilities for 11 °C, 13 °C, and 14 °C outcomes. Model runs differ on exact wind timing and precipitation intensity, key variables that will determine whether the low settles near 10–12 °C or remains closer to 15–16 °C before dawn.
Resumo experimental gerado por IA com dados do Polymarket. Isto não é aconselhamento de trading e não tem qualquer papel na resolução deste mercado. · Atualizado

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