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La Niña means dry weather for Brazil

Short-term, wetter weather returns for many Brazilian states.

After wet weather last week, the week-ending October 23 turns drier for much of southern Brazil.

In fact, most of the states that saw above-normal precipitation last week will see a reversal in precipitation trends as below-normal precipitation prevails. 

The exception will be in Minas Gerais which is forecast to see the seventh wettest third week of October in more than 30 years, according to data from WeatherTrends360. The wetter weather was encouraging news for farmers planting corn and soybeans in the state.

Drier trends will stretch from Mato Grosso do Sul southward to Rio Grande do Sul in the third week of October. This will be one of the driest third weeks of October in 30-plus years across southern Brazil and much of the major full-season corn growing region, according to WeatherTrends360

Brazil weather

Temperatures across the region will run below normal for the third week of October and this is forecast to be one of the coolest since 1991 for the major soybean growing region of Brazil. 

Despite the forecast for below-average precipitation, soybean planting progress has been much faster than recent years for Brazil, AgRural reported last week. However, obstacles lie ahead in the 2021/2022 growing season as La Niña has reemerged, as expected, which brings drier risks to Brazil. 

On October 14, the National Oceanic and Atmospheric Administration’s Climate Prediction Center officially declared that La Niña has redeveloped. During La Niña, Brazil’s growing regions are at higher risk of below-normal precipitation and drought. Given the antecedent dry conditions across this area, the continued signal for dry weather will likely be a major headwind for Brazil’s agricultural industry in the months ahead. La Niña is expected to persist into Brazil’s early autumn 2022 season.



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