September weather forecast
Nouadhibou, Mauritania

September

Weather in September

In September, the city witnesses a record high of rainfall, peaking at 31mm (1.22"), surpassing all previous months. The temperatures remain at a high of around 27.5°C (81.5°F) but begin to show signs of a prompt decline towards the end. Even though the humidity levels drop from that in August, the total moisture content remains relatively high due to the significant rainfall. Remarkably, despite the high rainfall, September experiences bright skies and substantial sunshine hours, sustaining the summer-like ambiance. The blend of sun and rain offers a unique twist to the city's climate.

Temperature

September stands out as Nouadhibou's warmest month, with an average high-temperature of 27.5°C (81.5°F) and a low-temperature of 24.5°C (76.1°F).

Heat index

During September, the heat index is calculated to be a tropical 30°C (86°F). Staying active during long-term exposure might result in a state of exhaustion and cause heat cramps.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.

Humidity

The average relative humidity in September is 69%.

Rainfall

The month with the most rainfall is September, when the rain falls for 8.7 days and typically aggregates up to 31mm (1.22") of precipitation.

Daylight

In Nouadhibou, the average length of the day in September is 12h and 16min.
On the first day of the month, sunrise is at 06:52 and sunset at 19:23. On the last day of September, sunrise is at 06:59 and sunset at 18:56 GMT.

Sunshine

In Nouadhibou, the average sunshine in September is 9.7h.

UV index

The months with the highest UV index in Nouadhibou, Mauritania, are February through December, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In September, a regular UV index of 6 translates into these guidelines:
Guard oneself from overexposure. Defence against sun injury is vital. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.

Frequently asked questions

What is the hottest time of year?
In Nouadhibou, September is known for its average highest temperatures, reaching a high of 27.5°C (81.5°F) and a low of 24.5°C (76.1°F).
What are the temperatures in September?
The high-temperature, in September, in Nouadhibou, is 27.5°C (81.5°F), while the low-temperature averages to 24.5°C (76.1°F). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is calculated to be 30°C (86°F).
What is the average humidity in September?
In Nouadhibou, the average relative humidity in September is 69%.
What is the rainiest month?
The month with the most rainfall is September, when the rain falls for 8.7 days and typically aggregates up to 31mm (1.22") of precipitation.
How many days does it rain in September?
In Nouadhibou, during September, the rain falls for 8.7 days and regularly aggregates up to 31mm (1.22") of precipitation.
How many hours of daylight does Nouadhibou have in September?
The average day length in September is 12h and 16min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 06:52 and sunset at 19:23. On the last day of the month, sunrise is at 06:59 and sunset at 18:56 GMT.
How many hours of sunshine does Nouadhibou have in September?
The average sunshine duration in September is 9.7h.
What is the month with the highest UV index?
The months with the highest UV index are February through December, with an average maximum UV index of 6.
What is the UV index intensity in September?
The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high hazard to health from exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in September
Nouadhibou, Mauritania
  • Average high temperature in September: 27.5°C

The warmest month (with the highest average high temperature) is September (27.5°C).
The months with the lowest average high temperature are January and February (21.7°C).

  • Average low temperature in September: 24.5°C

The month with the highest average low temperature is September (24.5°C).
The coldest month (with the lowest average low temperature) is February (17.8°C).

Average pressure in September
Nouadhibou, Mauritania
  • Average pressure in September: 1012.3mbar

The month with the highest atmospheric pressure is January (1017.6mbar).
The month with the lowest atmospheric pressure is August (1011.2mbar).

Average wind speed in September
Nouadhibou, Mauritania
  • Average wind speed in September: 26.3km/h

The windiest month (with the highest average wind speed) is May (32km/h).
The calmest month (with the lowest average wind speed) is December (21.5km/h).

Average humidity in September
Nouadhibou, Mauritania
  • Average humidity in September: 69%

The month with the highest relative humidity is August (76%).
The month with the lowest relative humidity is January (55%).

Average rainfall in September
Nouadhibou, Mauritania
  • Average rainfall in September: 31mm

The wettest month (with the highest rainfall) is September (31mm).
The driest months (with the least rainfall) are January, March, April and December (1mm).

Average rainfall days in September
Nouadhibou, Mauritania
  • Average rainfall days in September: 8.7 days

The month with the highest number of rainy days is September (8.7 days).
The month with the least rainy days is February (0.4 days).

Average daylight in September /
Average sunshine in September
Nouadhibou, 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 4min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January, March, October, November and December (Average sunshine: 9h and 36min).

Average sunshine days in September
Nouadhibou, Mauritania
  • Average sunshine days in September: 19.5 days

The month with the most sunshine days is January (30.1 days).
The month with the least sunshine days is September (19.5 days).

Average UV index in September
Nouadhibou, Mauritania
  • Average UV index in September: 6

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

Average cloud cover in September
Nouadhibou, Mauritania
  • Average cloud cover in September: 12

The month with the most cloud cover is November (Cloud cover 13).
The month with the least cloud cover is May (Cloud cover 8).

Average visibility in September
Nouadhibou, 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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