Inmet: weather forecast between January 26th and February 2nd

For the last week of January, the National Institute of Meteorology (Inmet) forecasts high temperatures across the country, as well as rain for the Northern Region, areas of Minas Gerais and Rio de Janeiro. According to Meteorological Bulletin No. 04/2026, maximum temperatures may reach 38 ºC in some locations between January 26 and February 2, 2026. 

Na Northern RegionTotal rainfall is expected to be between 502 mm and 100 mm. The highest volumes are expected in Acre, western Amazonas, and Pará. Regarding temperatures, Inmet indicates maximums that may vary between 26°C and 34°C. Minimum temperatures should remain stable, with values ​​ranging between 22°C and 24°C.

Na North East Region There is no rain forecast for the entire central area. On the other hand, areas of Maranhão, western Bahia, and the far west of Piauí should experience more humidity, favoring rainfall between 50 mm and 100 mm. Furthermore, isolated thunderstorms with rainfall totals exceeding 50 mm in a single day are possible in areas of southwestern Bahia. Maximum temperatures should also remain high, with values ​​between 34°C and 38°C in regions such as southern Piauí, eastern Ceará, and areas of western Rio Grande do Norte, Paraíba, and Pernambuco. 

Inmet predicts a week of irregular rainfall in Midwest regionIn most of the region, rainfall totals are expected to be around 50 mm. However, in areas of eastern Mato Grosso and western Goiás, totals could reach close to 100 mm. As in other regions, maximum temperatures remain high in Mato Grosso do Sul and southern Mato Grosso, ranging between 34°C and 36°C. In other areas, maximum temperatures should reach 32°C. 

For SoutheastThe forecast indicates a scenario requiring attention, with the possibility of extreme weather events. Rainfall totals could exceed 120 mm between Friday (January 30th) and Saturday (January 31st) in eastern São Paulo, Vale do Paraíba, southern Minas Gerais, Zona da Mata Mineira, and throughout the state of Rio de Janeiro. The week is expected to be marked by high temperatures, with maximums exceeding 32°C in southern and western São Paulo state and northern Minas Gerais. In other areas, temperatures will remain milder, with maximums ranging from 24°C to 26°C. 

Already in SouthThe forecast is for drier weather, with no significant rainfall expected at the start of the week. On the other hand, between Friday (January 30th) and Saturday (January 31st), total rainfall could exceed 100 mm between the coast of Santa Catarina and eastern Paraná. The predominance of dry weather for several consecutive days, caused by the action of a high-pressure system, will favor a rise in temperatures. The most affected areas should register maximum temperatures of 32°C to 38°C in Rio Grande do Sul, Santa Catarina, and Paraná. The predicted values ​​should be between 5°C and 7°C above the historical average until Wednesday (January 28th). Conversely, in the second half of the week, maximum temperatures will decline, with values ​​ranging between 26°C and 28°C.