September weather forecast
San Pedro de Atacama, Chile

Weather in September

September, the first month of the spring in San Pedro de Atacama, is also a moderate month, with an average temperature fluctuating between 15.9°C (60.6°F) and 3°C (37.4°F).

Temperature

In September, the average high-temperature is practically the same as in August - a still moderate 15.9°C (60.6°F). In San Pedro de Atacama, in September, the average low-temperature is 3°C (37.4°F).

Humidity

In San Pedro de Atacama, the average relative humidity in September is 23%.

Rainfall

September is the last month it rains in San Pedro de Atacama, Chile. During 0.5 rainfall days, San Pedro de Atacama aggregates 1mm (0.04") of precipitation. In San Pedro de Atacama, during the entire year, the rain falls for 23.5 days and collects up to 58mm (2.28") of precipitation.

Snowfall

In San Pedro de Atacama, Chile, snow does not fall in January through April, August through December.

Daylight

The average length of the day in September is 11h and 58min.
On the first day of September, sunrise is at 06:42 and sunset at 18:22 -04. On the last day of the month, sunrise is at 07:13 and sunset at 19:31 -03.
Note: On Sunday, 11. September 2022, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. Daylight Saving Time lasts until Sunday, 02. April 2023, at 00:00; consequently, the time zone reverts from -03 to -04.

Sunshine

The average sunshine in September is 9.9h.

UV index

January through March, August through December, with an average maximum UV index of 4, are months with the highest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in San Pedro de Atacama?

The average high-temperature, in September, in San Pedro de Atacama, is 15.9°C (60.6°F), while the average low-temperature is 3°C (37.4°F).

What is the average humidity in September in San Pedro de Atacama?

In San Pedro de Atacama, Chile, the average relative humidity in September is 23%.

What is the last month it rains in San Pedro de Atacama?

September is the last month it rains. During 0.5 rainfall days, in September, San Pedro de Atacama aggregates 1mm (0.04") of precipitation.

When it does not snow in San Pedro de Atacama?

January through April, August through December are months without snowfall in San Pedro de Atacama.

How many hours of daylight does San Pedro de Atacama have in September?

In September, the average day length is 11h and 58min.

What time are sunrise and sunset in September in San Pedro de Atacama?

On the first day of September, sunrise is at 06:42 and sunset at 18:22 -04. On the last day of the month, sunrise is at 07:13 and sunset at 19:31 -03.

When does Daylight Saving Time (DST) start in September in San Pedro de Atacama?

On Sunday, 11. September 2022, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. DST ends on Sunday, 02. April 2023, at 00:00.

How many hours of sunshine does San Pedro de Atacama have in September?

The average sunshine duration in September in San Pedro de Atacama, Chile, is 9.9h.

What is the month with the highest UV index in San Pedro de Atacama?

January through March, August through December, with an average maximum UV index of 4, are months with the highest UV index in San Pedro de Atacama, Chile.

What is the UV index reading in September in San Pedro de Atacama?

In September, the average daily maximum UV index in San Pedro de Atacama is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
San Pedro de Atacama, Chile

Average temperature in September - San Pedro de Atacama, Chile
  • Average high temperature in September: 15.9°C

The warmest months (with the highest average high temperature) are January and December (20.6°C).
The month with the lowest average high temperature is July (12.2°C).

  • Average low temperature in September: 3°C

The month with the highest average low temperature is February (9.9°C).
The coldest month (with the lowest average low temperature) is July (0.3°C).

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Average pressure in September
San Pedro de Atacama, Chile

Average pressure in September - San Pedro de Atacama, Chile
  • Average pressure in September: 1018.9mbar

The months with the highest atmospheric pressure are June and July (1021.2mbar).
The month with the lowest atmospheric pressure is December (1014.7mbar).

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Average wind speed in September
San Pedro de Atacama, Chile

Average wind speed in September - San Pedro de Atacama, Chile
  • Average wind speed in September: 7.5km/h

The windiest month (with the highest average wind speed) is January (8.5km/h).
The calmest month (with the lowest average wind speed) is April (6.1km/h).

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Average humidity in September
San Pedro de Atacama, Chile

Average humidity in September - San Pedro de Atacama, Chile
  • Average humidity in September: 23%

The month with the highest relative humidity is February (46%).
The month with the lowest relative humidity is October (21%).

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Average rainfall in September
San Pedro de Atacama, Chile

Average rainfall in September - San Pedro de Atacama, Chile
  • Average rainfall in September: 1mm

The wettest month (with the highest rainfall) is February (23mm).
The driest months (with the least rainfall) are October and November (0mm).

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Average rainfall days in September
San Pedro de Atacama, Chile

Average rainfall days in September - San Pedro de Atacama, Chile
  • Average rainfall days in September: 0.5 days

The month with the highest number of rainy days is February (7.7 days).
The month with the least rainy days is November (0.1 days).

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Average snowfall in September
San Pedro de Atacama, Chile

Average snowfall in September - San Pedro de Atacama, Chile
  • Average snowfall in September: 0mm

The month with the highest snowfall is July (4mm).
The months with the least snowfall are January, February, March, April, August, September, October, November and December (0mm).

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Average snowfall days in September
San Pedro de Atacama, Chile

Average snowfall days in September - San Pedro de Atacama, Chile
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is July (0.5 days).
The months with the least snowfall days are January, February, March, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
San Pedro de Atacama, Chile

Average daylight in September / Average sunshine in September - San Pedro de Atacama, Chile
  • Average daylight in September: 11h and 58min

The month with the longest days is December (Average daylight: 13h and 31min).
The month with the shortest days is June (Average daylight: 10h and 45min).

  • Average sunshine in September: 9h and 54min

The months with the most sunshine are April and November (Average sunshine: 10h and 0min).
The month with the least sunshine is June (Average sunshine: 9h and 42min).

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Average sunshine days in September
San Pedro de Atacama, Chile

Average sunshine days in September - San Pedro de Atacama, Chile
  • Average sunshine days in September: 29.5 days

The month with the most sunshine days is October (30.7 days).
The month with the least sunshine days is February (17.8 days).

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Average UV index in September
San Pedro de Atacama, Chile

Average UV index in September - San Pedro de Atacama, Chile
  • Average UV index in September: 4

The months with the highest UV index are January, February, March, August, September, October, November and December (UV index 4).
The months with the lowest UV index are April, May, June and July (UV index 3).

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Average cloud cover in September
San Pedro de Atacama, Chile

Average cloud cover in September - San Pedro de Atacama, Chile
  • Average cloud cover in September: 2

The month with the most cloud cover is February (Cloud cover 11).
The months with the least cloud cover are August, September and November (Cloud cover 2).

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Average visibility in September
San Pedro de Atacama, Chile

Average visibility in September - San Pedro de Atacama, Chile
  • Average visibility in September: 10km

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

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