The Dirección Meteorológica de Chile (DMC) said that rain will arrive in the Metropolitan Region and central Chile on June 13, 2026 [1].
This weather event is significant because it involves a high-category atmospheric river, which can lead to substantial changes in regional water levels and urban drainage challenges in densely populated areas like Santiago.
The precipitation is expected to begin during the early hours of Wednesday, June 13 [1, 2]. The DMC said the weather shift is due to a frontal system driven by a category five atmospheric river [3, 4]. This system is generating increased cloud cover and the subsequent rainfall across the region.
While the Metropolitan Region is the primary focus, reports indicate the rain will also affect the Valparaíso and O’Higgins regions [1, 2]. There are conflicting reports regarding the intensity of the storm. Some sources said the coming rain is "important" [2], while others said that the frontal system may not be intense and could only leave some precipitation through increased cloudiness [3].
Forecasts for the day of the event include a maximum temperature of 24 °C [2]. The timing of the rainfall is critical for city infrastructure, as the start of the precipitation is previsto for the early morning of the 13th [1, 2].
Local authorities continue to monitor the atmospheric river's path to determine if the rainfall will be light or heavy enough to trigger emergency alerts in the central zones [3, 4].
“rain will arrive in the Metropolitan Region and central Chile on June 13, 2026”
The arrival of a category 5 atmospheric river suggests a powerful transport of moisture from the tropics to the central Chilean coast. While there is disagreement among sources regarding the final intensity of the rainfall in Santiago, the breadth of the affected areas—stretching from Valparaíso to O’Higgins—indicates a large-scale meteorological event that could impact regional transport and agriculture.
