El Chaltén Weather in September

El Chaltén in September averages 3°C (37°F) during the day and -4°C (25°F) at night. This is the driest month of the year.

Rainfall in El Chaltén in September

You can expect the least amount of rain of the year this month. The dry conditions are a bonus, even if the cooler temperatures mean you'll need to dress accordingly. Historically, September sees about 5 days of snow/rain, with a monthly average of 157 mm (6.2 in). The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.

Temperature in El Chaltén in September

El Chaltén in September gets highs of 3°C (37°F) during the day and drops to -4°C (25°F) at night. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. At -4°C (25°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating. This month is particularly chilly, so wearing layers is necessary to stay warm and comfortable.

Sunshine in El Chaltén in September

You can expect a moderate amount of sunlight, with approximately 170 hours. This means a pleasant mix of sun and overcast.

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