September weather forecast
Atar, Mauritania

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Weather in September

September ushers in a cooler atmosphere in Atar, but with a relative increase in night-time temperatures compared to August. Despite a fall in temperature, September distinguishes itself with the highest level of moisture, as indicated by the 29.5°C (85.1°F) minimum temperature recorded. The rain scale also descends, introducing an end to the brief rainy season. Lower wind speeds compared to August contribute further to the sweltering conditions. Before the year ends, September serves as the last month experiencing a UV index level of 8.

Temperature

A minor adjustment in Atar's average high-temperature is noted with the start of September, touching a sweltering 39.2°C (102.6°F) from August's 40.4°C (104.7°F). During September, Atar sees a mean low-temperature of 29.5°C (85.1°F).

Humidity

In September, the average relative humidity in Atar, Mauritania, is 25%.

Rainfall

The month with the most rainfall in Atar is September, when the rain falls for 6.2 days and typically aggregates up to 11mm (0.43") of precipitation.

Daylight

In September, the average length of the day is 12h and 16min.
On the first day of the month, sunrise is at 06:36 and sunset at 19:07. On the last day of September, in Atar, Mauritania, sunrise is at 06:43 and sunset at 18:40 GMT.

Sunshine

In September, the average sunshine is 9.8h.

UV index

The average daily maximum UV index in September is 8. A UV Index of 8 to 10 symbolizes a very high threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 8 during September leads to these advisories:
Prioritize your safety. Without precautions, skin and eyes might get hurt quickly. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Resources | Updated: Feb 7, 2024 | Published by: Weather Atlas

Frequently asked questions

How hot does it get in Atar in September?

In September, the average high-temperature and low-temperature in Atar are 39.2°C (102.6°F) and 29.5°C (85.1°F) respectively.

What is the average humidity in September in Atar?

In Atar, Mauritania, the average relative humidity in September is 25%.

What is the wettest month in Atar?

The month with the most rainfall in Atar, Mauritania, is September, when the rain falls for 6.2 days and typically aggregates up to 11mm (0.43") of precipitation.

How many days does it rain in September in Atar?

In September, in Atar, the rain falls for 6.2 days. Throughout September, 11mm (0.43") of precipitation is accumulated.

How many hours of daylight does Atar have in September?

In Atar, the average day length in September is 12h and 16min.

When are sunrise and sunset in September in Atar?

On the first day of September in Atar, Mauritania, sunrise is at 06:36 and sunset at 19:07. On the last day of the month, sunrise is at 06:43 and sunset at 18:40 GMT.

How many hours of sunshine does Atar have in September?

In September, the average sunshine duration in Atar is 9.8h.

What is the UV index reading in September in Atar?

The average daily maximum UV index in September in Atar is 8. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to Sun's UV rays.

Average temperature in September
Atar, Mauritania

Average temperature in September - Atar, Mauritania
  • Average high temperature in September: 39.2°C

The warmest month (with the highest average high temperature) is July (41.5°C).
The month with the lowest average high temperature is January (26.2°C).

  • Average low temperature in September: 29.5°C

The month with the highest average low temperature is August (29.7°C).
The coldest month (with the lowest average low temperature) is January (14.3°C).

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Average pressure in September
Atar, Mauritania

Average pressure in September - Atar, Mauritania
  • Average pressure in September: 1010.9mbar

The month with the highest atmospheric pressure is January (1017.5mbar).
The month with the lowest atmospheric pressure is August (1009.2mbar).

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Average wind speed in September
Atar, Mauritania

Average wind speed in September - Atar, Mauritania
  • Average wind speed in September: 15.2km/h

The windiest month (with the highest average wind speed) is December (18.2km/h).
The calmest month (with the lowest average wind speed) is November (14.3km/h).

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Average humidity in September
Atar, Mauritania

Average humidity in September - Atar, Mauritania
  • Average humidity in September: 25%

The month with the highest relative humidity is August (27%).
The month with the lowest relative humidity is May (17%).

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Average rainfall in September
Atar, Mauritania

Average rainfall in September - Atar, Mauritania
  • Average rainfall in September: 11mm

The wettest month (with the highest rainfall) is September (11mm).
The driest months (with the least rainfall) are January, February, March and April (0mm).

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Average rainfall days in September
Atar, Mauritania

Average rainfall days in September - Atar, Mauritania
  • Average rainfall days in September: 6.2 days

The month with the highest number of rainy days is September (6.2 days).
The month with the least rainy days is December (0.1 days).

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Average daylight in September /
Average sunshine in September
Atar, Mauritania

Average daylight in September / Average sunshine in September - Atar, Mauritania
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).

  • Average sunshine in September: 9h and 5min

The months with the most sunshine are May, July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 9h and 24min).

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Average sunshine days in September
Atar, Mauritania

Average sunshine days in September - Atar, Mauritania
  • Average sunshine days in September: 22.5 days

The month with the most sunshine days is December (30.9 days).
The month with the least sunshine days is September (22.5 days).

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Average UV index in September
Atar, Mauritania

Average UV index in September - Atar, Mauritania
  • Average UV index in September: 8

The month with the highest UV index is June (UV index 9).
The month with the lowest UV index is December (UV index 5).

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Average cloud cover in September
Atar, Mauritania

Average cloud cover in September - Atar, Mauritania
  • Average cloud cover in September: 14

The month with the most cloud cover is September (Cloud cover 14).
The month with the least cloud cover is May (Cloud cover 7).

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Average visibility in September
Atar, Mauritania

Average visibility in September - Atar, Mauritania
  • 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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Atar, Mauritania

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