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Cold Front Brings Rain and Temperature Drop to Southeast This Sunday

Instability advances to São Paulo, Rio de Janeiro, and Minas Gerais, with risk of storms in coastal areas

Daniele Morais
October 12, 2026 · 2 min read
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Cold Front Brings Rain and Temperature Drop to Southeast This Sunday
Photo: "Strengthening Winter Storm Impacting Northeast; Severe Weather Possible in Mid-Atlantic" by NASA Goddard Photo and Video is licensed under CC BY 2.0. To view a copy of this licens

A cold front is advancing towards the Southeast coast, bringing heavy rainfall and a sharp drop in temperatures this Sunday, October 11. The phenomenon primarily affects São Paulo, Rio de Janeiro, Minas Gerais, and parts of the Paraíba Valley, placing the region on storm alert.

Cold Front Brings Intense Rainfall to the Southeast

According to forecasts, the cold front moving towards the São Paulo coast is expected to bring heavy rainfall to São Paulo, Rio de Janeiro, and southern Minas Gerais. In São Paulo, the morning will start with sun and clouds, but showers will return in the afternoon, accompanied by thunderstorms that may extend into the night. In Rio de Janeiro, rain will intensify in the afternoon and evening, with a risk of storms, especially between the Serra da Mantiqueira and the southern part of the state.

Instability Extends to the South and Central-West

In the Southern states, rain will begin in the west and spread throughout the day, potentially becoming intense and accompanied by storms in Santa Catarina, Paraná, and Rio Grande do Sul. In the Central-West, Mato Grosso do Sul will see increased rainfall during the afternoon, with the possibility of storms, while Brasília will remain sunny and hot.

Temperatures Drop in Southeast Capitals

Maximum temperatures in the Southeast capitals will drop compared to previous days. In São Paulo, temperatures will range between 17 °C and 27 °C; in Rio de Janeiro, the maximum will reach 31 °C, but the night will bring light rain. In Belo Horizonte, the forecast maximum is 31.9 °C, with a minimum around 20 °C, and there is a chance of moderate rain.

Risk of Storms on São Paulo Coast

Eastern São Paulo faces a concentrated risk of storms, especially in coastal areas and near the border with Minas Gerais. Showers may be accompanied by thunderstorms and strong winds, requiring attention from residents and travelers.

Forecast for the North and Northeast

In the North, Amazonas, Acre, Rondônia, Roraima, and southwestern Pará may experience moderate to heavy showers, with a risk of isolated storms. In the Northeast, the interior remains dry, while the coast will see quick, low-intensity rainfall between Paraíba and Porto Seguro, Bahia, as well as along the Maranhão coast.

With information from VEJA, Revista Oeste, CartaCapital.

Source: VEJA, Revista Oeste, CartaCapital

#weather#cold front#rain#storms#Southeast Brazil
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