Weather in San Juan: Forecast for Saturday, August 22, 2026

Residents of San Juan, Argentina, can expect a cool Saturday on August 22, 2026, with the weather service predicting a high of 18°C and a low of 5°C. Light breezes will be present, with winds estimated around 14 km/h from the south in the morning, shifting slightly and weakening to 6 km/h from the southeast by mid-morning. Humidity levels are expected to be around 64% initially, rising slightly to 70% later in the morning.

The afternoon and evening forecast indicates continued fair weather, with no precipitation anticipated. Winds are expected to be light, around 10 km/h from the east in the afternoon, and returning to a southerly direction at 14 km/h for the night. Humidity is likely to remain moderate throughout the day.

The report also provides context on the National Meteorological Service (SMN), the official body responsible for weather forecasting and issuing alerts in Argentina. The SMN utilizes a network of weather stations, satellite imagery, and numerical models to provide its predictions. It defines meteorological alerts as warnings for potential weather threats, issued in advance to aid public decision-making.

Furthermore, the article clarifies the different alert levels used by the SMN. A yellow alert signifies potential risks that could cause temporary disruptions, while an orange alert indicates dangerous weather phenomena posing risks to life, property, and the environment. A red alert is reserved for exceptional meteorological phenomena with the potential to cause emergencies or disasters.