September weather forecast
Antofagasta, Chile

Weather in September

The first month of the spring, September, is still a comfortable month in Antofagasta, Chile, with an average temperature varying between 13°C (55.4°F) and 18.7°C (65.7°F).

Temperature

In Antofagasta, the average high-temperature in September is almost the same as in August - a still comfortable 18.7°C (65.7°F). In Antofagasta, the average low-temperature is 13°C (55.4°F).

Humidity

In Antofagasta, Chile, the average relative humidity in September is 70%.

Rainfall

January through May, September through December are months without rainfall.

Sea temperature

In Antofagasta, in September, the average water temperature is 14.8°C (58.6°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

The average length of the day in September in Antofagasta is 11h and 58min.
On the first day of the month, sunrise is at 06:52 and sunset at 18:30 -04. On the last day of September, sunrise is at 07:22 and sunset at 19:40 -03.
Note: On Sunday, 04. 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

February, September through December, with an average of 10h of sunshine, are months with the most sunshine in Antofagasta, Chile.

UV index

The months with the lowest UV index are March through December, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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 average humidity in September in Antofagasta?

In September, the average relative humidity in Antofagasta is 70%.

What is the driest month in Antofagasta?

In Antofagasta, Chile, rain does not fall in January through May, September through December.

Does it rain in Antofagasta in September?

In September, in Antofagasta, Chile, it doesn't rain. August is the latest month when it rains.

What is the water temperature in September in Antofagasta?

In Antofagasta, Chile, the average seawater temperature in September is 14.8°C (58.6°F). Swimming in 14.8°C (58.6°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Antofagasta have in September?

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

When is the sunrise / sunset in September in Antofagasta?

On the first day of September, sunrise is at 06:52 and sunset at 18:30 -04. On the last day of the month, sunrise is at 07:22 and sunset at 19:40 -03.

When does Daylight Saving Time (DST) start in September in Antofagasta?

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

What is the month with the most sunshine in Antofagasta?

February, September through December, with an average of 10h of sunshine, are months with the most sunshine.

How long on average sun shines in September in Antofagasta?

The average sunshine duration in September is 10h.

When is the lowest UV index in Antofagasta?

March through December, with an average maximum UV index of 5, are months with the lowest UV index in Antofagasta.

What is the UV index reading in September in Antofagasta?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.

Average temperature in September
Antofagasta, Chile

Average temperature in September - Antofagasta, Chile
  • Average high temperature in September: 18.7°C

The warmest month (with the highest average high temperature) is February (23.7°C).
The month with the lowest average high temperature is July (18.3°C).

  • Average low temperature in September: 13°C

The month with the highest average low temperature is February (18.8°C).
The coldest month (with the lowest average low temperature) is August (12.6°C).

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Average pressure in September
Antofagasta, Chile

Average pressure in September - Antofagasta, Chile
  • Average pressure in September: 1014.9mbar

The month with the highest atmospheric pressure is July (1015.5mbar).
The month with the lowest atmospheric pressure is February (1012mbar).

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Average wind speed in September
Antofagasta, Chile

Average wind speed in September - Antofagasta, Chile
  • Average wind speed in September: 12.6km/h

The windiest month (with the highest average wind speed) is December (12.8km/h).
The calmest months (with the lowest average wind speed) are May and June (10.9km/h).

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Average humidity in September
Antofagasta, Chile

Average humidity in September - Antofagasta, Chile
  • Average humidity in September: 70%

The months with the highest relative humidity are February, March and April (75%).
The months with the lowest relative humidity are June and July (67%).

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Average rainfall in September
Antofagasta, Chile

Average rainfall in September - Antofagasta, Chile
  • Average rainfall in September: 0mm

The wettest months (with the highest rainfall) are June, July and August (1mm).
The driest months (with the least rainfall) are January, February, March, April, May, September, October, November and December (0mm).

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Average rainfall days in September
Antofagasta, Chile

Average rainfall days in September - Antofagasta, Chile
  • Average rainfall days in September: 0.4 days

The month with the highest number of rainy days is July (1.6 days).
The month with the least rainy days is November (0 days).

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Average sea temperature in September
Antofagasta, Chile

Average sea temperature in September - Antofagasta, Chile
  • Average sea temperature in September: 14.8°C

The best month for swimming (with the highest average sea temperature) is February (20.8°C).
The coldest month (with the lowest average sea temperature) is August (14.6°C).

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Average daylight in September /
Average sunshine in September
Antofagasta, Chile

Average daylight in September / Average sunshine in September - Antofagasta, Chile
  • Average daylight in September: 11h and 58min

The month with the longest days is December (Average daylight: 13h and 34min).
The month with the shortest days is June (Average daylight: 10h and 42min).

  • Average sunshine in September: 10h and 0min

The months with the most sunshine are February, September, October, November and December (Average sunshine: 10h and 0min).
The month with the least sunshine is July (Average sunshine: 9h and 48min).

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Average sunshine days in September
Antofagasta, Chile

Average sunshine days in September - Antofagasta, Chile
  • Average sunshine days in September: 29.9 days

The month with the most sunshine days is October (31 days).
The month with the least sunshine days is February (27.2 days).

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Average UV index in September
Antofagasta, Chile

Average UV index in September - Antofagasta, Chile
  • Average UV index in September: 5

The months with the highest UV index are January and February (UV index 6).
The months with the lowest UV index are March, April, May, June, July, August, September, October, November and December (UV index 5).

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Average cloud cover in September
Antofagasta, Chile

Average cloud cover in September - Antofagasta, Chile
  • Average cloud cover in September: 2

The month with the most cloud cover is February (Cloud cover 11).
The month with the least cloud cover is September (Cloud cover 2).

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Average visibility in September
Antofagasta, Chile

Average visibility in September - Antofagasta, 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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