The weather forecast for El Chaltén on March 11, 2026, shows that the daytime temperature will reach a high of 11°C and a low of 5°C according to the National Meteorological Service (SMN). Winds are expected to be light at 15 km/h, and humidity will average around 77%. The early hours are predicted to experience light rain with an accumulation of about 1 mm, alongside a humidity level of 77% and light winds from the northwest.

As the morning progresses, no significant precipitation is forecasted, with humidity slightly increasing to 79% and winds calming down to 13 km/h from the northwest. This indicates a brief respite from rain during the later morning hours before the weather shifts again in the afternoon.

In the afternoon and evening, light rain is expected again, with total precipitation reaching about 3 mm during the day and another 1 mm expected at night. The weather will remain characterized by light northwesterly winds, peaking at 18 km/h during the afternoon and then dropping to 16 km/h at night, suggesting a continuation of mild but damp conditions throughout the day and into the night.