Inmet: weather forecast between February 17 and 24, 2025

The National Institute of Meteorology (Inmet) released today the weather forecast for Brazil between February 17 and 24, 2025. According to the Cosmo numerical model, rainfall is expected in almost the entire country, with accumulations during the week that could exceed 50 mm in the North, west of Mato Grosso and South regions.  

On the other hand, in Roraima, east-central Northeast, north-central Southeast and east of Goiás, the tendency is for rainfall to occur with accumulations below 20 mm. In addition, rainfall accumulations above 80 mm may occur in a wide area of ​​the North Region, west of Mato Grosso and north of Maranhão and Piauí.

Na Northern Region, the instabilities associated with heat and high humidity will maintain the rain showers throughout the week, with accumulations above 50 mm in much of the region, with the exception of much of Roraima, where rainfall will be scarcer, with volumes below 20 mm. Rainfall may exceed 100 mm in Acre, southwest and northwest of Amazonas and central and northeast of Pará. The Intertropical Convergence Zone (ITCZ) positioned further south will cause accumulations above 100 mm in northeastern Pará and areas of eastern Amapá.

Na North East Region, the action of the ITCZ ​​will favor precipitation in the north of Maranhão, Piauí and the coast of Ceará, with rainfall forecast above 80 mm. In the eastern strip of the region, rain may occur in isolated spots in the form of showers, with accumulations of less than 20 mm, while in the central part of Bahia and Pernambuco, the trend is for stable weather in the coming days.

Na Midwest region, the combination of heat and humidity maintains areas of instability in Mato Grosso, Mato Grosso do Sul and western Goiás, which will favor rain showers throughout the week. Accumulations above 40 mm are forecast for the northwest of Mato Grosso, while in the east of that state, much of Goiás and Mato Grosso do Sul, there is a tendency for reduced rainfall, with accumulations below 40 mm.

Na Southeast, the trend is for stable weather in much of Minas Gerais, with the possibility of showers in the late afternoon, typical of summer, due to the combination of heat and humidity in Espírito Santo and Rio de Janeiro. In São Paulo, the week begins with stable weather in much of the region, however, the passage of a frontal system over the ocean will favor instability mainly in the eastern part of the state. The greatest accumulations of rainfall are forecast for the southeast of São Paulo, with volumes above 60 mm.

A South, begins the week with areas of instability throughout the region due to the action of a frontal system in the ocean. The system will advance towards the ocean, allowing the weather to become stable again in much of Rio Grande do Sul from Wednesday onwards. In Santa Catarina and Paraná, the tendency is for rain showers throughout the week, allowing accumulated rainfall above 80 mm in some areas.