September weather forecast
Arequipa, Peru

Weather in September

The first month of the spring, September, is also an enjoyable month in Arequipa, Peru, with an average temperature ranging between max 17.8°C (64°F) and min 7.7°C (45.9°F).

Temperature

In Arequipa, the average high-temperature in September is practically the same as in August - a still comfortable 17.8°C (64°F). The average low-temperature, in Arequipa, is 7.7°C (45.9°F).

Humidity

In Arequipa, Peru, the average relative humidity in September is 40%.

Rainfall

In Arequipa, in September, during 2.7 rainfall days, 3mm (0.12") of precipitation is typically accumulated. In Arequipa, during the entire year, the rain falls for 84.2 days and collects up to 260mm (10.24") of precipitation.

Daylight

The average length of the day in September is 12h and 1min.
On the first day of September in Arequipa, sunrise is at 05:52 and sunset at 17:40. On the last day of the month, sunrise is at 05:29 and sunset at 17:43 -05.

Sunshine

In September, the average sunshine in Arequipa is 9.9h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 4. The months with the lowest UV index are January through December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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 Arequipa?

In Arequipa, in September, the average high-temperature is 17.8°C (64°F), and the average low-temperature is 7.7°C (45.9°F).

What is the average humidity in September in Arequipa?

In September, the average relative humidity is 40%.

How many days does it rain in September in Arequipa?

In Arequipa, in September, it is raining for 2.7 days, with typically 3mm (0.12") of accumulated precipitation.

What is the average length of the day in September in Arequipa?

In Arequipa, Peru, the average day length in September is 12h and 1min.

When are sunrise and sunset in September in Arequipa?

In September, on the first day of the month, sunrise is at 05:52 and sunset at 17:40. On the last day of the month, sunrise is at 05:29 and sunset at 17:43 -05.

How long on average sun shines in September in Arequipa?

In September, the average sunshine duration in Arequipa is 9.9h.

When is the highest UV index in Arequipa?

The months with the highest UV index in Arequipa are January through December, with an average maximum UV index of 4.

What are the months with the lowest UV index in Arequipa?

The months with the lowest UV index in Arequipa are January through December, with an average maximum UV index of 4.

How high is the UV index in September in Arequipa?

The average daily maximum UV index in September in Arequipa is 4. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in September
Arequipa, Peru

Average temperature in September - Arequipa, Peru
  • Average high temperature in September: 17.8°C

The warmest month (with the highest average high temperature) is October (17.9°C).
The month with the lowest average high temperature is February (15.2°C).

  • Average low temperature in September: 7.7°C

The month with the highest average low temperature is February (10.7°C).
The coldest month (with the lowest average low temperature) is July (6.7°C).

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Average pressure in September
Arequipa, Peru

Average pressure in September - Arequipa, Peru
  • Average pressure in September: 1017.3mbar

The months with the highest atmospheric pressure are June and July (1018.2mbar).
The months with the lowest atmospheric pressure are February and December (1015.1mbar).

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Average wind speed in September
Arequipa, Peru

Average wind speed in September - Arequipa, Peru
  • Average wind speed in September: 8km/h

The windiest month (with the highest average wind speed) is January (9.6km/h).
The calmest month (with the lowest average wind speed) is June (6.5km/h).

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Average humidity in September
Arequipa, Peru

Average humidity in September - Arequipa, Peru
  • Average humidity in September: 40%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (35%).

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Average rainfall in September
Arequipa, Peru

Average rainfall in September - Arequipa, Peru
  • Average rainfall in September: 3mm

The wettest month (with the highest rainfall) is January (81mm).
The driest months (with the least rainfall) are June and August (1mm).

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Average rainfall days in September
Arequipa, Peru

Average rainfall days in September - Arequipa, Peru
  • Average rainfall days in September: 2.7 days

The month with the highest number of rainy days is February (18.2 days).
The month with the least rainy days is August (0.8 days).

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Average daylight in September /
Average sunshine in September
Arequipa, Peru

Average daylight in September / Average sunshine in September - Arequipa, Peru
  • Average daylight in September: 12h and 1min

The month with the longest days is December (Average daylight: 13h and 5min).
The month with the shortest days is June (Average daylight: 11h and 10min).

  • Average sunshine in September: 9h and 54min

The month with the most sunshine is December (Average sunshine: 11h and 6min).
The month with the least sunshine is July (Average sunshine: 7h and 36min).

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Average sunshine days in September
Arequipa, Peru

Average sunshine days in September - Arequipa, Peru
  • Average sunshine days in September: 25.1 days

The month with the most sunshine days is August (28.3 days).
The month with the least sunshine days is February (8.5 days).

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Average UV index in September
Arequipa, Peru

Average UV index in September - Arequipa, Peru
  • Average UV index in September: 4

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

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Average cloud cover in September
Arequipa, Peru

Average cloud cover in September - Arequipa, Peru
  • Average cloud cover in September: 7

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 3).

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Average visibility in September
Arequipa, Peru

Average visibility in September - Arequipa, Peru
  • Average visibility in September: 10km

The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January and February (9km).

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