After several days of oppressive heat, very high humidity, and heat indices above normalThe weather in Buenos Aires and the entire Metropolitan Area (AMBA) is entering a completely different phase. The advance of a cold front From the south of the country, the summer streak will end and open the door to a much cooler, more typical autumn atmosphere.
This change in air masses will not be smooth: weather models agree that it will occur a sudden drop in the thermometer, with decreases of between 10 and 15 degrees in a few hoursThe new scenario will include rains and storms, intense gusts of southerly wind and a clear relief from the sweltering days of late March and early April.
How and when will the cold front arrive in Buenos Aires and the AMBA (Greater Buenos Aires)?
In the Metropolitan Area, the arrival of the frontal system will mark a definitive break in the string of hot daysFriday may still see highs of around 29-30 °C, but it will be the last day with summer-like weather; from the evening onwards, instability will set in, leading to a drop in temperature.
According to forecasts from the National Meteorological Service (SMN), the front will not only affect the Capital and the surrounding metropolitan area, but also to a large part of the province of Buenos Aires, with a change of air that will extend towards the center and north of the country in the following days.
Severe storms as a prelude to the temperature collapse
The arrival of the cold front will not be silent. The atmosphere, highly charged with moisture and energy after several days of tropical air, will favor storms of varying intensity during Friday night and early Saturday morningIn some areas they may be strong, with heavy rainfall in a short time, gusts of wind and electrical activity.
These rains will act as the gateway to a new weather pattern: They are the transitional phase between sweltering heat and a distinctly autumnal atmosphere.In areas of southern and inland Buenos Aires province, episodes of intense rainfall have already been recorded, with accumulations that, locally, exceeded 50-100 mm in a few hours.
The SMN maintains Yellow and even orange level alerts for storms For large areas of central Argentina, including parts of northern Buenos Aires province, Córdoba, Santa Fe, Entre RÃos, and other northwestern provinces. Isolated hail, gusts that could exceed 80 km/h, and significant lightning activity are possible in these areas.
Daily temperature drop in Buenos Aires City and surrounding areas
In the Autonomous City of Buenos Aires (CABA) and surrounding areas, the change in weather will be quite clearly reflected in the temperatures. After a Friday with highs around 29 °C and heat indices close to or above 30 °CThe temperature drop will be noticeable during the long weekend.
- Saturday 4: They wait Minimum temperatures around 14-15 °C and maximum temperatures close to 21-22 °CWith variable cloudiness, south and southeast winds and a chance of scattered showers, especially during the first part of the day.
- Domingo 5: The weather will be even cooler. Dawn may bring the temperature close to... 11-14 ° C and the maximum will barely be around 19-21 ° CThe sky will have greater cloud cover, with a perceived temperature below the thermometer readings, especially due to wind gusts.
- Monday 6th and Tuesday 7th: are expected maximum temperatures contained, around 20-22 °CWith cool mornings and the possibility of rain and showers, in a context of instability that may reactivate at times.
Overall, the change will entail a a temperature difference of approximately 10-15 degrees compared to previous heat peaksThis will be especially noticeable in the early morning and at night.
The south wind, the star of the long weekend
In addition to the drop in temperature, the wind will be a key factor in this episode. The forecast is Moderate to strong gusts from the south and southwest, in the range of 40 to 50 km/hwhich will reinforce the feeling of cold both in the Capital and in the Buenos Aires metropolitan area.
This type of wind, popularly known as a "pampero" when it arrives strongly, is typical of the most marked seasonal changes. In this case, it will help to to sweep away the tropical humidity that had been dominating the center of the country, leaving a much drier air and enhancing the feeling of an autumnal atmosphere.
While widespread extreme conditions are not expected, gusts may be felt more intensely in riverine areas and open spacesTherefore, it is recommended to secure loose objects on balconies, terraces and gardens, and to drive with caution on roads and highways, especially during storms.
Alerts and areas most affected by the cold front
The SMN Early Warning System maintains surveillance a good part of the central and northern parts of the country in the face of the advancing front. In the case of Buenos Aires, a yellow alert for storms for large areas of the province, including inland sectors and the coastal strip.
These areas are expected Rain of varying intensity, possible episodes of hail, gusts that could exceed 80 km/h and frequent electrical discharges. Towns in the north and west of Buenos Aires province, as well as municipalities in the Greater Buenos Aires metropolitan area (AMBA), are among the most exposed to intense downpours in short periods.
Beyond the province of Buenos Aires, the alerts extend to Córdoba, Santa Fe, Entre RÃos, Mendoza and several provinces in northwestern Argentina, where locally severe storms are also expected. In the Patagonian region, meanwhile, the advance of low pressure and cold air is generating strong winds and even wintry conditions in mountainous areas, with isolated snowfalls.
What will the weather be like after the frontal system passes?
Once the cold front finishes crossing the central region, the situation is expected to gradually stabilize. In the City of Buenos Aires and its surrounding areas, The following days will show a much more bearable atmospherewith skies ranging from partly cloudy to somewhat clearer and temperatures typical of autumn.
The Maximum temperatures will tend to be between 20 and 22 °CWhile the minimum temperatures will remain in a cool range, generally below 16°C. This pattern will break, at least for a few days, the streak of intense heat that had been affecting much of the country.
However, it is not ruled out that some activity will resume at the beginning of the week. Instability with the return of rain and showersEspecially on Monday and Tuesday, when the wind shifts to the east, bringing moisture in from the river. It won't be until midweek, with a further influx of drier air from the south, that conditions will begin to improve more significantly.
Tips and recommendations for dealing with sudden temperature changes
The transition from almost summery weather to typical autumnal conditions in such a short time can catch many people off guard. That's why official bodies and specialists suggest adopting Some simple measures to better adapt to the changing weather and reduce risks associated with storms.
- Have on hand outerwear and transitional clothing for the mornings and evenings, when the temperature drop will be most noticeable.
- Pay special attention to children, the elderly, and those with respiratory or cardiovascular problems, more sensitive to sudden temperature changes.
- Avoid driving through flooded areas and Drive with caution during heavy rain and gusty windsmaintaining a safe distance and reducing speed.
- Secure flowerpots, awnings, and loose objects on balconies and patios to to prevent accidents caused by wind.
- Closely follow the notices and updates of National Metereological Service and local emergency services.
Inside homes, it is advisable Ventilate the rooms if you start using stoves or heaters.Avoid using braziers or combustion appliances in enclosed spaces. Although the cold weather is not extreme polar, it may prompt some households to turn on their heating earlier than usual.
The arrival of this cold front means, in practice, that autumn is settling in firmly in Buenos Aires and the Greater Buenos Aires area: the sticky heat of the last few days is quickly giving way to a scenario of Lower temperatures, less humidity, and unstable weatherFor many, it will be a welcome relief; for others, a reminder that it's time to take the coat out of the closet and reorganize routines to keep pace with the new times.
