San Pedro de Atacama Weather in September
September in San Pedro de Atacama sees daytime temperatures around 21°C (70°F) and lows of 4°C (39°F) at night. The perfect weather makes it a good time to visit.
Rainfall in San Pedro de Atacama in September
Rain is expected on roughly a single day, totalling around 1 mm (0.04 in) for the month. If rain does fall, it tends to be very light and barely worth getting out an umbrella for.
Temperature in San Pedro de Atacama in September
If you're visiting San Pedro de Atacama in September, expect perfect temperatures with highs of 21°C (70°F) and overnight lows of 4°C (39°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With lows around 4°C (39°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April, May, August, September, October, November and December typically offer the best circumstances for San Pedro de Atacama.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our San Pedro de Atacama's climate page.
San Pedro de Atacama Temperature in September
Min Temperature
4°C (39°F)
Max Temperature
21°C (70°F)
Chance of Rain
4%
Precipitation
1 mm (0.04 in)
Rainy days
a single day
Humidity
13%
Historical weather for San Pedro de Atacama in September
Browse day-by-day weather records for San Pedro de Atacama spanning 21 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Pedro de Atacama historical weather extremes in September
The extremes listed below come from historical weather data collected in San Pedro de Atacama from 2006 through 2025.
- The hottest September day on record in San Pedro de Atacama reached 28°C (82°F) (September 24, 2019).
- The coldest September day was on September 8, 2019, with a maximum of 16°C (61°F).
- Nighttime temperatures dropped to 0°C (32°F) on September 1, 2025, marking the coldest September night on record.
Best Places in Chile in September
Find out more about the weather in Chile and which places have the best travel conditions in this month. See all of Chile in September →
perfect weather
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What to Wear in San Pedro de Atacama in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. With minimal rainfall expected, you can leave the rain gear at home.What To Do in San Pedro de Atacama in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Chile, check out our San Pedro de Atacama's climate page.
See the full San Pedro de Atacama climate overview or explore weather in Chile.
