Barometric Pressure Forecast for Buenos Aires, Argentina
Barometric pressure forecast for Buenos Aires, Argentina — on the Río de la Plata at the edge of the pampas, where the pampero and the sudestada drive the barometer in opposite directions. See current barometric pressure and what it means for weather-sensitive people.
Download Pressure Pal to track barometric pressure and get migraine alerts for Buenos Aires and your area.
Pressure and weather in Buenos Aires
Buenos Aires spreads along the western shore of the Río de la Plata, the vast shallow estuary of the Paraná and Uruguay rivers, on ground so flat that the pampas run uninterrupted for hundreds of kilometres inland. The city has no hills, no mountain shelter and no ocean coast in the usual sense, and its weather is defined by two named wind events that every resident knows. Barometric pressure here is dominated by the passage of cold fronts sweeping up from Patagonia. The pampero is the classic one: after a humid, oppressive build-up with the barometer sagging, a front arrives from the southwest with a line of thunderstorms, a violent wind shift and then a rapid, decisive rise in current barometric pressure as dry cool air floods in off the plains. In summer these events break the worst heat waves and can do so within an hour. The sudestada is the opposite and in some ways more punishing: a persistent southeasterly gale driven by low pressure over the estuary or northeast Argentina with high pressure to the south, holding the barometer low for a day or more, piling water up the Río de la Plata and flooding low-lying neighbourhoods. Because this is the southern hemisphere the calendar is inverted — the most active frontal season runs from roughly May through September, the local winter, while the summer months of December through February bring heat, humidity and explosive evening thunderstorms. Spring, from September to November, is the most changeable stretch. A barometric pressure forecast for Buenos Aires is useful throughout the year.
What this means for you
Can barometric pressure cause headaches? The pampero delivers one of the fastest pressure rises found in any major city, and the sudestada one of the longest sustained low-pressure spells, so residents here experience both extremes of the pattern. Many weather-sensitive people report reacting to the two events quite differently. Use this barometric pressure forecast with Pressure Pal as a headache tracking app to see pressure change today and get warning before the next front crosses the pampas.