The weather forecast for Costa del Este, Buenos Aires, on Saturday, March 21, 2026, predicts a maximum temperature of 22°C and a minimum temperature of 16°C. According to the National Weather Service (SMN) of Argentina, winds are expected to reach 31 km/h, and the relative humidity will be around 89%.

During the morning hours, light rain is expected, with forecasts indicating approximately 1 mm of precipitation and persistent humidity of 89%. Winds will be moderate, blowing at 31 km/h from the northeast. As the morning progresses, heavier rainfall is predicted, with expected precipitation rising to 17 mm and humidity increasing slightly to 91%.

For the afternoon and evening, the SMN warns that abundant rainfall of another 17 mm is likely, along with moderate winds increasing to 34 km/h from the north. However, by nighttime, no rain is anticipated, allowing for a clearer sky as the evening approaches.