A polar air mass is moving across Brazil, bringing a sharp drop in temperatures and a risk of frost starting Saturday, June 13, 2026 [1].
This weather event threatens agricultural stability and public health across several regions. The intensity of the cold front creates immediate risks for crops and livestock in the southern states, where temperatures can plummet rapidly.
The cold front is advancing over the Center-South, affecting the South, Southeast, and Center-West regions, as well as parts of the North [2]. Rio Grande do Sul is seeing the most significant impact, with thermometers recording values close to 0°C [3].
Meteorological reports indicate the system is affecting 12 states [4]. While some reports describe the air mass as intense and causing a brusque drop in temperatures, other sources said the cold may not be as severe as initially predicted [2, 3].
The movement of the polar front is driven by the displacement of cold air from the south, which generates the current risk of frost [5]. Local authorities in the affected regions are monitoring the temperature drops to mitigate potential damage to infrastructure, and agriculture.
Residents in the South and Southeast are advised to prepare for the temperature dip that began this past June. The spread of the air mass into the North region is less common but is noted in current forecasts [2].
“Temperatures in the South are marking values close to 0°C.”
The arrival of a polar air mass in June aligns with the Southern Hemisphere's winter, but the risk of frost across 12 states indicates a significant weather event. Such fluctuations can disrupt regional supply chains and agriculture, particularly in the South, where temperatures nearing freezing points can damage sensitive crops.
