Brazil · Weather information
Brazil cold front: what INMET forecast for the South through October 13
Original published October 12, 2026 · Archival context reviewed October 20, 2026 · ConverteArq Editorial Team
This is a retrospective of an INMET bulletin issued on October 9, 2026. Its temperatures were forecasts for October 13, not measurements or live alerts.
What the bulletin forecast at the time
On October 9, 2026, Brazil’s National Institute of Meteorology (INMET) published a forecast covering October 10 to 13, with an update later that day. It described a cold front and colder air moving into the South. For Tuesday, October 13, it forecast fewer clouds in Rio Grande do Sul, isolated rain possible in the state’s far north, continued rain in Paraná and isolated rain in Santa Catarina. These are statements from a bulletin whose forecast period has ended.
A forecast is tied to a place and date
The bulletin forecast another cold day in the South, including a low of 10 °C in Porto Alegre and a high of 20 °C in Curitiba on October 13. Those values were forecasts made in that dated document. ConverteArq did not measure temperatures or verify station observations for this article. A regional forecast also does not establish the weather in every municipality, and a historical forecast is not a live alert.
How to check weather information before a trip
For a current decision, note the city, date and time of the activity, then consult the latest official forecast and any alert whose area and validity match. A bulletin covering several days can provide regional context, but readers should check for a newer update before traveling. This guidance cannot guarantee road conditions or the safety of an outdoor activity.
Sources and date
INMET’s bulletin was published and updated on October 9, 2026, and covered October 10–13. The forecast period has passed. Checked for archival context on October 20, 2026.
ConverteArq commentary
The useful part of this page now is historical: it records what the INMET bulletin forecast and keeps its publication date attached to the figures. Weather information loses practical meaning when a past forecast is shared without its period. We therefore label the forecast as expired rather than suggesting that it describes conditions today.
For planning, a regional outlook and a current municipal alert answer different questions. Checking the place, issue time and validity period helps readers choose the right source without treating one old bulletin as a measurement or a promise.