What will the weather be like in Brazil in March?

For the month of March 2026, the climate forecast from the National Institute of Meteorology (Inmet) indicates above-average rainfall in areas of the North and Northeast regions. On the other hand, the forecast is for below-average rainfall for March in areas of the South and North regions.

For Northern RegionRainfall totals up to 50 mm above average are predicted in central-eastern Pará, throughout Amapá, in much of Tocantins, and in areas of Amazonas. On the other hand, below-average volumes are predicted in southwestern Pará, southern and northern Rondônia, northeastern and southern Amazonas, and southern Acre. In other areas of the region, such as much of the state of Roraima, the forecast indicates values ​​close to the climatological average.

About North East RegionRainfall up to 50 mm above average is expected in practically all states, with particular emphasis on Maranhão, Piauí, Ceará, Rio Grande do Norte, Paraíba, and Pernambuco. In other areas of the region, such as southern Bahia, eastern Pernambuco, and the states of Sergipe and Alagoas, the forecast indicates values ​​close to the climatological average for March.

For Midwest regionThe forecast indicates above-average rainfall in western Goiás, central-eastern Mato Grosso, and southwestern Mato Grosso do Sul. In other areas of the region, rainfall totals are predominantly close to the historical average for the month.

For SoutheastThe forecast predicts above-average rainfall in north-central São Paulo and some areas of north-central Minas Gerais. On the other hand, below-average rainfall is expected in most of the state of Rio de Janeiro. In the rest of the region, the forecast indicates rainfall close to the climatological average for the month.

About SouthThe forecast indicates predominantly below-average rainfall across virtually all of Paraná, west-central Santa Catarina, and the northern and coastal regions of Rio Grande do Sul. In other areas of the South, rainfall totals are expected to be close to the climatological average for March.

Temperature in the month

The forecast indicates that temperatures should be above average across much of the country.

For Northern RegionThe forecast indicates a predominance of average temperatures close to the climatological average for March. Exceptions occur in south-central Roraima (with temperatures predicted to be up to 0,4 ºC above the historical average) and the extreme north of Amapá, Roraima, and Amazonas (where the forecast indicates temperatures up to 0,4 ºC below the climatological average for March).

Na North East RegionThe forecast indicates temperatures up to 0,6°C above average in much of Bahia, Pernambuco, and central Maranhão. In other areas of the region, temperatures will predominantly be close to the historical average for the month.

Na Midwest regionThe forecast indicates average temperatures up to 1°C above the climatological average for the month throughout Mato Grosso do Sul, as well as higher temperatures in much of Goiás and south-central Mato Grosso.

For SoutheastTemperatures up to 1°C above average are expected in all states of Minas Gerais and São Paulo, while Rio de Janeiro and Espírito Santo should have temperatures close to the historical average for March.

Na SouthThe forecast predicts above-average temperatures in most states. On the other hand, the forecast indicates near-average temperatures in western Paraná, eastern Santa Catarina, and the coastal region of Rio Grande do Sul.

Impacts on agricultural crops

Na Northern RegionThe forecast of rainfall volumes near or above average in much of the region, as well as air temperatures near average, should favor the replenishment and maintenance of soil water reserves, contributing to the good vegetative development of soybeans, especially in areas of Tocantins and southeastern Pará. This scenario may also benefit the establishment and beginning of the development of second-crop corn in regions where the soybean harvest is already more advanced.

Na North East RegionThe forecast of above-average rainfall and temperatures within or slightly above the climatological average, especially in western Bahia and areas of the São Francisco Valley in Pernambuco, tends to favor the partial recovery of soil moisture and the reduction of water stress in rainfed areas. These conditions may contribute positively to the development of temporary crops in the vegetative and reproductive phases, as well as the maintenance and vigor of pastures, particularly in areas that had been facing water restriction in previous months.

Na Midwest regionRainfall near and above average, coupled with high temperatures across most of the region, tends to favor soil moisture retention and crop survival throughout the period. In general, this scenario is favorable for the development of first-crop cultures such as soybeans and cotton. Water availability also contributes to the initial establishment of second-crop cultures, such as corn, sorghum, beans, and cotton, especially in areas where planting occurs within the recommended window. However, higher temperatures can increase evapotranspiration and accelerate water consumption in the soil, requiring special attention in areas with lower water retention capacity.

Na SoutheastThe expected rainfall in most of the region tends to maintain favorable soil moisture levels, benefiting the development of sugarcane, as well as soybean and second-crop corn. These conditions also favor the maintenance of vigorous pastures, with positive effects for livestock systems.

Na SouthThe forecast for March indicates rainfall volumes slightly below average and temperatures above average, especially in north-central Paraná, increasing evapotranspiration and reducing soil water availability. These conditions may harm crops in the final stages of their cycle, as well as restrict the development of second-crop corn and beans. Reduced soil moisture may also impact the carrying capacity of pastures, requiring greater attention to forage management and monitoring of water conditions throughout the period.