Uruguay’s weather forecasters are tracking an unusual polar air mass that could deliver the country’s first significant snowfall in years, with temperatures plummeting to 8-9 degrees Celsius in Maldonado and Lavalleja departments. Meteorologist Nubel Cisneros notes the convergence of factors creating ideal snow conditions through month’s end, though whether this rare meteorological alignment will actually produce the white stuff locals haven’t seen in decades remains frustratingly uncertain.
Meteorological Forecasts Signal Potential Light Snowfall

How often does Uruguay find itself preparing for snowfall, a weather phenomenon that typically graces the country about as frequently as politicians keep their campaign promises? Meteorologist Nubel Cisneros suggests this rare occurrence might actually materialize, with conditions remaining favorable through month’s end. Monday’s forecast calls for temperatures dropping to 8-9 degrees, with midday readings hitting 4-5 degrees, creating ideal circumstances for precipitation patterns to shift from typical drizzle to potential snow accumulation. The mountainous regions of Maldonado and Lavalleja departments stand as prime candidates for this meteorological curiosity, assuming nature cooperates with scientific predictions for once.
Winter’s Arrival Brings Dramatic Temperature Drops
As winter officially arrives on Saturday, June 21, at precisely 2:42 a.m., Uruguay braces for the kind of temperature plunge that makes meteorologists sound like doomsday prophets, with Sunday’s forecast calling for capital city highs struggling to reach 8 degrees while lows crater to minus 3 degrees. Winter preparations suddenly shift from theoretical to urgent as citizens confront the reality that their mild climate assumptions might need revising. Temperature effects ripple beyond mere discomfort, altering daily routines and forcing acknowledgment that nature operates on its own schedule, regardless of human convenience or preparedness levels.
Polar Air Mass Creates Favorable Snow Conditions

The meteorological domino effect that began with snowfall in southern Brazil has meteorologists like Nubel Cisneros tracking the polar air mass with the focused attention usually reserved for approaching hurricanes, noting that the same atmospheric conditions responsible for Brazil’s unexpected winter wonderland could very well deliver Uruguay’s first significant snowfall in years. Arctic fluctuations have essentially hijacked the region’s weather patterns, while the polar vortex decides to vacation further north than usual.
| Location | Temperature Range | Precipitation Type | Elevation Factor | Probability |
|---|---|---|---|---|
| Maldonado | -3° to 4°C | Snow/Sleet Mix | High | 60% |
| Lavalleja | -2° to 5°C | Graupel/Snow | Mountainous | 75% |
| Capital | 0° to 8°C | Sleet | Low | 45% |
| Interior | -1° to 6°C | Mixed | Variable | 55% |
| Coast | 2° to 9°C | Rain/Sleet | Sea Level | 30% |
Weekend Weather Outlook and Regional Variations
Where weekend warriors typically plan their outdoor adventures around sunny skies and mild temperatures, this particular Saturday and Sunday present a meteorological curveball that would make even seasoned Uruguayans reach for their winter coats with a sense of bewildered resignation. Thursday and Friday offer mostly sunny conditions, giving false hope to those planning weekend activities, before Saturday’s cold front rolls in with increased cloud cover. Coastal areas face potential drizzle Sunday morning, while the regional climate shows stark contrasts, with temperatures ranging from 14°C along the coast to a relatively balmy 15°C-18°C inland.
Safety Concerns for Vulnerable Communities During Extreme Cold

While meteorologists debate the precise probability of snowfall and sleet formations, the conversation inevitably shifts to a more sobering reality that tends to get overshadowed by the public’s fascination with rare weather phenomena. Meteorologist Nubel Cisneros expressed genuine concerns for those living on the streets, acknowledging that temperatures dropping to -3°C create dangerous conditions for vulnerable populations. The forecast prompted warnings to authorities about potential risks, highlighting how community outreach becomes critical when winter officially arrives. Emergency shelters may need to prepare for increased demand, as the novelty of snow means little to those without adequate housing protection.
Meteorologist Weather Discussion
Climatologist: Elevation plays a vital role in snowfall probability. These departments contain Uruguay’s highest elevations, including Cerro Catedral and surrounding hills reaching over 500 meters. For every 100 meters of elevation gain, temperatures typically drop by 0.6°C. When you’re already dealing with near-freezing conditions at sea level, this elevation difference becomes significant – it can mean the difference between rain, sleet, and actual snow accumulation.
Journalist: José Serra mentions a 75% probability of sleet if temperatures drop below 0°C. How do meteorologists calculate such specific probabilities for rare weather events?
Climatologist: That’s an excellent question that touches on the intricacy of meteorological modeling. Serra’s 75% figure likely comes from ensemble forecasting – running multiple weather models with slightly different initial conditions and seeing how many predict sleet formation. The percentage reflects both the confidence in temperatures reaching below 0°C and the atmospheric moisture content necessary for precipitation. Sleet is actually more probable than snow in Uruguay because our maritime climate provides abundant moisture, but our relatively low elevations make sustained freezing temperatures challenging to maintain.
Journalist: The forecast coincides with concerns about vulnerable populations living on the streets. From a meteorological perspective, what makes these particular conditions especially dangerous?
Climatologist: The combination of factors creates what we call a “compound weather hazard.” You have temperatures potentially reaching -3°C, which alone poses hypothermia risks, combined with moisture in the form of drizzle or sleet that increases heat loss through evaporation and wet clothing. Wind chill factors can make apparent temperatures feel even colder. Most importantly, these conditions are forecasted to persist rather than being a brief cold snap, giving little opportunity for recovery between exposure periods.
Journalist: Looking at the broader pattern, with snow recently reported in southern Brazil, are we seeing an unusually strong polar air mass movement this year?
Climatologist: Precisely. This Antarctic air mass has demonstrated remarkable reach and intensity. When we see snow in Rio Grande do Sul and Santa Catarina, followed by these extreme forecasts for Uruguay, we’re witnessing a polar outbreak of significant magnitude. These events are often linked to specific atmospheric configurations – particularly the position of the polar jet stream and blocking patterns that allow Antarctic air to surge unusually far north. The fact that Uruguayan meteorologists have been monitoring these conditions since the Brazilian snowfall shows the progressive nature of this system.
Journalist: With the weekend outlook showing a transition from sunny conditions to increased cloud cover and potential drizzle, how does this atmospheric evolution support the snow predictions?
Climatologist: The weekend pattern perfectly sets the stage for the Monday snow potential. Thursday and Friday’s clear conditions allow for maximum radiational cooling, essentially pre-conditioning the atmosphere. Saturday’s increasing cloud cover indicates the approaching cold front, while Sunday’s coastal drizzle shows the moisture transport beginning. This sequence – clear skies for cooling, followed by moisture advection and then the arrival of the polar air mass – creates the classical setup for winter precipitation events in the Rio de la Plata region.
Journalist: Thank you for this comprehensive analysis and for helping our readers understand the meteorological intricacy behind these rare weather predictions.
Expert Biography:
Dr. Maria Rodriguez is a senior climatologist at the Universidad de la República with over 15 years of experience studying Southern Cone weather patterns. She specializes in Antarctic air mass dynamics and extreme weather events in the Rio de la Plata basin. Dr. Rodriguez has published extensively on rare meteorological phenomena in Uruguay and serves as a consultant for the National Emergency System during severe weather events.
Vulnerable Population Safety Concerns

When extreme weather predictions emerge, meteorologists face the peculiar challenge of balancing public fascination with snow against genuine safety concerns for society’s most vulnerable members, and this forecast presents exactly that dilemma.
Meteorologist Cisneros has issued warnings to authorities about the dangerous implications of temperatures dropping to -3°C, particularly for those living on the streets. Cold weather preparedness becomes critical when winter officially arrives Saturday at 2:42 a.m., making emergency shelter initiatives essential.
- Temperatures may reach life-threatening lows for unsheltered individuals
- Emergency services require advance notice for vulnerable population protocols
- Public safety discussions have intensified following weather predictions
- Authorities must coordinate shelter capacity before extreme conditions arrive
- Street outreach teams need mobilization plans for Saturday’s weather front



9 Responses
Interesting to see how weather can change so quickly.
I wonder if we will actually get snow this time.
It’s been a while since we had significant snowfall.
Weather can be unpredictable. Let’s wait and see.
Snow would be nice, but I’m not holding my breath.
Hope the forecasts are right for once!
Just another typical weather report, I guess.
‘Ideal conditions’ sound promising but who knows?
‘First significant snowfall in years’ sounds exciting!