Santiago, Chile, will experience a “polar air incursion” starting this Sunday, with temperatures forecast to drop below 0ºC and morning frosts reaching -4ºC next week, according to reports from the Meteorological Directorate and local media outlets including BioBioChile and Cooperativa.
When will the sub-zero temperatures hit Santiago?
The temperature drop begins this Sunday, according to Megatiempo. While the initial decline starts this weekend, the most severe conditions are expected throughout the following week. BioBioChile reports that frosts could reach as low as -4ºC during this period.
Which areas are most affected by the cold front?
The cold front will primarily impact the Metropolitan Region (RM). According to Meteored Chile, the start of winter will be “gélid” for the region, with several specific communes expected to register temperatures below 0ºC during the coming week.

What weather conditions are expected alongside the frost?
In addition to the plummeting temperatures, Megatiempo reports that the polar air mass may bring “llovizna o garúa” (drizzle or mist) to Santiago this Sunday. Cooperativa further notes that the most significant frosts will be concentrated in the morning hours.
- Start Date: This Sunday
- Forecasted Lows: Up to -4ºC
- Primary Region: Metropolitan Region (RM) / Santiago
- Expected Phenomena: Morning frosts, polar air incursion, and possible drizzle