The first day of the National High School Exam (Enem) 2026, this Sunday (8), is expected to see heavy rain and lower temperatures in part of the South and Southeast, especially during the movement of candidates to the test locations.
The forecast is for rain showers from the morning onwards in São Paulo and Rio de Janeiro. In Minas Gerais and Espírito Santo, there is a chance of thunderstorms throughout the afternoon.
In the South, the arrival of a mass of polar air should bring down temperatures, but the rain tends to lose intensity in much of the region.
In the North and Northeast, heat should predominate, with highs that could exceed 40°C in areas of the interior of the Northeast.
According to Climatempo, the change in weather is associated with the advance of a new cold front through the Center-South, followed by the entry of air of polar origin.
The main point of attention for candidates will be the arrival time at the test locations, as rain is forecast from early in the morning in some of the country's largest cities.
The Enem gates will open at 12pm and close at 1pm, Brasília time. The tests start at 1:30 pm and end at 7:00 pm.
"Sunday has rain forecast from early in the morning in part of the Southeast. So, anyone traveling to the test site will have to be aware of this and take a coat", says César Soares, meteorologist at Climatempo.
According to him, wind gusts can reach 80 km/h in areas affected by instability.
The meteorologist explains that the most intense rain should be concentrated in parts of São Paulo, Rio de Janeiro and the center-south of Minas Gerais, where there is also the possibility of storms.
In the Midwest, the rain is expected to occur more isolated, although some areas may still experience heavy showers. Mato Grosso do Sul may also feel the arrival of colder air.
🌧️ See the main highlights of the Enem Sunday forecast:
Southeast: rain from early in the morning in São Paulo and Rio de Janeiro, with the possibility of thunderstorms in Minas Gerais and Espírito Santo in the afternoon. Temperatures drop, especially in São Paulo.
South: the cold will be the main highlight, with minimums of 4°C to 6°C in mountainous areas. The rain should decrease, but it could still reach Paraná and parts of the coast.
Central-West: isolated showers in Mato Grosso, Goiás, Distrito Federal and Mato Grosso do Sul, mainly during the afternoon. The heat decreases in part of the region.
Northeast: predominance of sun and intense heat, with temperatures that can exceed 40°C in inland areas. The rain should be restricted to parts of Maranhão, Piauí and Bahia.
North: heat and a feeling of stuffiness, in addition to moderate to strong showers in Amazonas, Acre, Rondônia and Tocantins, mainly in the afternoon.
Where can it rain when you arrive at the test locations?
In São Paulo and Rio de Janeiro, the forecast is for rain from the early hours of Sunday, which could affect the movement of candidates before the gates close at 1 pm.
In the capital of São Paulo, the day should be marked by many clouds and frequent rain. Temperatures are between 13°C and 19°C, a significant drop compared to Saturday (7), when the predicted maximum is 31°C.
In Rio de Janeiro (RJ), after a Saturday of heat of up to 35°C, the maximum is expected to drop to 24°C on Sunday.
The forecast is for rain from early morning, with showers that may occur during the morning, afternoon and night. Wind gusts can reach 80 km/h in the capital of Rio de Janeiro.
In the rest of the state, the strongest winds are expected to hit mainly the Metropolitan Region, Costa Verde, the Mountain Region and the Lakes Region.
In Curitiba (PR), Sunday should start off rainy, but the trend is for gradual improvement. The temperature varies between 11°C and 17°C, and the sun may appear between clouds in the afternoon.
In Porto Alegre (RS), rain may occur at the beginning of the day, but it should lose strength before the start of the races. The forecast indicates a minimum of 16°C and a maximum of 21°C.
In Florianópolis (SC), the weather is expected to be predominantly cloudy, with sunny periods and temperatures between 17°C and 20°C, with no significant rain forecast.
🌧️ Among the capitals, rain is forecast on Sunday morning (8) in:
São Paulo (SP) and Rio de Janeiro (RJ): rain from early on, with the possibility of moderate to heavy showers.
Curitiba (PR): rain at the beginning of the day and less chance throughout the afternoon.
Campo Grande (MS): possibility of temporary rain, interspersed with periods of sun.
Brasília (DF), Goiânia (GO) and Cuiabá (MT): showers accompanied by thunderstorms at times in the morning.
What about during the test and at the exit?
From 1:30 pm, the exam start time, the rain is expected to continue in areas of the Southeast, where there is the possibility of heavy showers mainly in Minas Gerais and Espírito Santo.
In Belo Horizonte, instability should gain strength during the afternoon and night. The forecast is for a minimum of 18°C and a maximum of 28°C. There is also a risk of heavy rain and thunderstorms.
In the state of São Paulo, the rain is also expected to persist, especially on the coast, where high accumulations are expected between Baixada Santista and the North Coast.
In Rio de Janeiro, beatings can continue throughout the exam period and also during the candidates' departure time.
In Espírito Santo, the advance of the cold front should favor moderate to heavy rain in different areas. In Vitória (ES), the temperature can vary between 19°C and 27°C and there is the possibility of temporary rain during the day.
In the Central-West, rain tends to gain intensity during the afternoon in Mato Grosso, Goiás and the Federal District. In Mato Grosso do Sul, the forecast indicates a gradual reduction in instability and a drop in temperatures.
In Brasília (DF), the forecast maximum is 30°C, with the possibility of showers and thunderstorms. Goiânia (GO) may register 32°C, while Cuiabá (MT) should reach 32°C.
In the South, the scenario will be different. The passage of the cold front should favor periods of sunshine and reduced rainfall in much of the region, although temperatures will remain low.
In areas of Serra Catarinense and Serra Gaúcha, minimum temperatures can be between 4°C and 6°C, with the possibility of light and isolated frost. In the capitals, the cold will be less intense, but it should still be noticeable.
In the Northeast, the heat should continue to be the main highlight during the race period.
Temperatures can exceed 40°C in interior areas of Bahia, Sergipe, Alagoas and Pernambuco. Relative air humidity can also be between 12% and 20% in some spots, especially during the hottest hours.
The rain should only occur in isolation in the center-south of Maranhão and Piauí, in addition to the west and south of Bahia.
In the North, Sunday is expected to be hot and rainy, especially during the afternoon, when candidates will be at the test sites.
Instabilities are expected to reach Amazonas, Acre, Rondônia, Tocantins and central-southern Pará, with the possibility of thunderstorms and isolated storms.
In Manaus (AM), the temperature should vary between 26°C and 33°C, with showers expected mainly in the afternoon and at night.
In Amapá and on the coast of Pará, the return of moisture from the ocean may favor localized rain.
Forecast for this Saturday
Before Enem, this Saturday (7) there should be heavy rain in part of the South, Southeast and Center-West.
In Paraná and Santa Catarina, there is a risk of storms, hail and winds of up to 90 km/h. In the Southeast, the heat still prevails, but the showers should gain strength in the afternoon.
In the North and Northeast, the heat remains intense, with temperatures that can reach 40°C and 41°C, respectively. Isolated rain is also forecast in areas of both regions.
On Monday (9), after the first day of races, the cold is expected to continue in part of the Center-South.
