Uruguayan temperatures: evolution and projections
Montevideo will experience a temperature jump on Wednesday the 10th, with highs around 22–23°C, compared to lower values on Tuesday. The Atlantic coast, including Punta del Este, will maintain highs between 18 and 21°C thanks to the sea breeze, which mitigates the impact compared to the interior. The expected pattern combines an initial peak on the 10th and alternating warm days until the 15th.
What the heat in Uruguay means this week: The country faces a temperature increase concentrated between September 10 and 15, 2025, with more noticeable peaks in the interior and the northern fringe. The phenomenon will vary in intensity depending on the region: the coast and the north will see the highest maximum temperatures, while the Atlantic coast will maintain more moderate temperatures. The escalating temperature requires basic preventive measures, especially for those who work outdoors.
Uruguay Forecast: When and Where the Temperature Rises
In Montevideo, a significant temperature jump is expected on Wednesday, September 10, when highs are expected to hover around 22–23°C, compared to more moderate values the previous day. The northern interior and the western coast will experience the most extreme conditions: Salto and Paysandú could reach between 25 and 26°C on the same Wednesday and experience warmer days again on the weekend of September 14 and 15. These contrasts are due to the warmer air
Heat wave: focus on the north and west coast
Salto appears to be one of the areas with the longest-standing high temperatures, with temperatures hovering around 26°C on several days during the aforementioned period. Rivera and the rest of the northern border will also see increases to 24–26°C on September 14 and 15, meaning the temperature will feel higher in areas without shade or natural ventilation. The Atlantic coast, including Punta del Este, will remain milder, with highs expected between 18 and 21°C, where the sea breeze will mitigate the impact.
Uruguayan temperatures and their evolution between September 10 and 15
The expected sequence shows an initial peak on Wednesday the 10th and temperature fluctuations with alternating warm days until Monday the 15th. The pattern presents warmer afternoons inland and relatively mild mornings along the coast; this influences the planning of outdoor activities and the energy demand associated with cooling. For local details, consult the Montevideo forecast at /forecast-montevideo and the prevention guide at /health-tips-heat.
Weather alert and tips for the heat
This is not an extraordinary alert for now, but it does represent a period of thermal risk for vulnerable populations and exposed workers. Frequent hydration, avoiding direct exposure between 11 a.m. and 4 p.m., and using sunscreen are essential measures. If you work on public roads or engage in physical activity, plan breaks in the shade, wear light clothing, and have access to water; consult local recommendations at /clima-uruguay.
