Early summer in Uruguay: forecast and expected first effects

by September 5, 2025
Uruguay al Día Radio
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Early summer in Uruguay and the signs that anticipate change

The local meteorological service predicts that, after an unusually cold winter, Uruguay will quickly move toward an early summer, with temperatures rising from the end of the month. This scenario does not rule out occasional bouts of cold: forecasts predict alternating warm days and frosty nights.
The forecasts combine analysis of seasonal trends with recent observations that show unusual temperature accumulations for the season.

Weather Forecast: What the Next Few Days Will Look Like

For the next few days, very low temperatures are expected early in the morning, and in the following weeks, a sustained rise will lead to significantly higher-than-normal highs. In parts of the metropolitan area, lows could drop below zero on isolated days, while highs could exceed 20°C toward the end of the month.
Extensive fog and mist are also forecast in lowland areas, with the possibility of intermittent rain, which will exacerbate the temperature.

Extreme Temperatures: Risks and Expected Fluctuations

The transition from a cold winter to an early summer implies greater temperature variability, with peaks of heat interspersed with days of persistent cold, especially in the early morning. This dynamic can affect agriculture, the health of sensitive groups, and energy demand, so meteorological authorities recommend heeding local advisories.
Furthermore, the combination of hot days and cold nights increases the likelihood of frost in some inland areas.

Climatic Spring: interpretation and factors at play

Specialists point out that the transition season can present contrasting phenomena when there is a thermal backlog accumulated during the winter and warm air masses circulate earlier. This early "climatic spring" typically brings weeks of changing weather that force short-term forecast adjustments.
The presence of atmospheric systems that drive warm masses from the subtropical region will be decisive in consolidating this seasonal advance.

Meteorological Prevention: Practical Recommendations

With warmer days expected but with occasional cold nights, the public is advised to take extreme precautions: protect sensitive plants, prepare appropriate clothing for temperature fluctuations, and follow official updates on frost warnings or precipitation. Public and health services should also consider possible peak demand.
Staying informed through official channels and planning outdoor activities with allowances for weather changes will reduce daily impacts.

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