September weather forecast
Bil, Senegal

September

Weather in September

September, the first month of the autumn in Bil, is still a tropical month, with an average temperature ranging between max 33.9°C (93°F) and min 24.8°C (76.6°F).

Temperature

As September takes hold, the average high-temperature is a still hot 33.9°C (93°F), nearly mirroring that of the previous month. In the month of September, the nighttime temperature dips to a steady average of 24.8°C (76.6°F).

Heat index

Throughout September, the heat index is appraised at a blazing hot 48°C (118.4°F). Be cautious: Heat exhaustion along with heat cramps are predicted. Heatstroke is a possible consequence of continuous physical effort.
Research indicates the heat index considers values in shaded locales and with light winds. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.
Through perspiration, the body has a natural mechanism to eliminate excessive heat via sweat evaporation. In circumstances of high air temperature and humidity (high heat index), the body's perspiration is restricted, heightening the feeling of warmth. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.

Humidity

September is the most humid month, with an average relative humidity of 74%.

Rainfall

In Bil, in September, it is raining for 19.9 days, with typically 82mm (3.23") of accumulated precipitation. Throughout the year, there are 75.6 rainfall days, and 317mm (12.48") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 13min.
On the first day of the month, sunrise is at 06:52 and sunset at 19:15. On the last day of September, sunrise is at 06:53 and sunset at 18:54 GMT.

Sunshine

In Bil, the average sunshine in September is 8.6h.

UV index

The months with the lowest UV index are January, February, July through September, November and December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In September, the maximum UV index of 7 suggests these recommendations:
Ward off overexposure. Defence against solar harm is crucial. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. 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.

Frequently asked questions

How hot does it get in September?
September temperatures vary between a high-temperature of 33.9°C (93°F) and a low-temperature of 24.8°C (76.6°F). In September, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 48°C (118.4°F).
What is the most humid month?
With an average relative humidity of 74%, September is the most humid month.
What is the average humidity in September?
In Bil, the average relative humidity in September is 74%.
How much does it rain in September?
In Bil, in September, it is raining for 19.9 days, with typically 82mm (3.23") of accumulated precipitation.
What is the average length of the day in September?
In September, the average day length is 12h and 13min.
When are sunrise and sunset in September?
In September, on the first day of the month, sunrise is at 06:52 and sunset at 19:15. On the last day of the month, in Bil, sunrise is at 06:53 and sunset at 18:54 GMT.
How long on average sun shines in September?
In September, the average sunshine duration is 8.6h.
What are the months with the lowest UV index?
The months with the lowest UV index are January, February, July through September, November and December, with an average maximum UV index of 7.
What is the UV index intensity in September?
The average daily maximum UV index in September is 7. A UV Index value of 6 to 7 symbolizes a high hazard to health from unsafe 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
Bil, Senegal
  • Average high temperature in September: 33.9°C

The warmest month (with the highest average high temperature) is April (41.4°C).
The month with the lowest average high temperature is August (33.7°C).

  • Average low temperature in September: 24.8°C

The month with the highest average low temperature is July (25.9°C).
The coldest month (with the lowest average low temperature) is January (18.8°C).

Average pressure in September
Bil, Senegal
  • Average pressure in September: 1011.8mbar

The month with the highest atmospheric pressure is January (1012.7mbar).
The month with the lowest atmospheric pressure is April (1009.9mbar).

Average wind speed in September
Bil, Senegal
  • Average wind speed in September: 8.6km/h

The windiest month (with the highest average wind speed) is February (13.7km/h).
The calmest months (with the lowest average wind speed) are September and October (8.6km/h).

Average humidity in September
Bil, Senegal
  • Average humidity in September: 74%

The month with the highest relative humidity is September (74%).
The month with the lowest relative humidity is January (16%).

Average rainfall in September
Bil, Senegal
  • Average rainfall in September: 82mm

The wettest month (with the highest rainfall) is August (128mm).
The driest months (with the least rainfall) are January, February and December (0mm).

Average rainfall days in September
Bil, Senegal
  • Average rainfall days in September: 19.9 days

The month with the highest number of rainy days is August (21 days).
The months with the least rainy days are January, February and December (0.2 days).

Average daylight in September /
Average sunshine in September
Bil, Senegal
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 54min).
The month with the shortest days is December (Average daylight: 11h and 18min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is May (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 7h and 18min).

Average sunshine days in September
Bil, Senegal
  • Average sunshine days in September: 8.5 days

The months with the most sunshine days are January and December (30.8 days).
The month with the least sunshine days is August (7.3 days).

Average UV index in September
Bil, Senegal
  • Average UV index in September: 7

The months with the highest UV index are March, April, May, June and October (UV index 8).
The months with the lowest UV index are January, February, July, August, September, November and December (UV index 7).

Average cloud cover in September
Bil, Senegal
  • Average cloud cover in September: 34

The month with the most cloud cover is August (Cloud cover 45).
The month with the least cloud cover is April (Cloud cover 6).

Average visibility in September
Bil, Senegal
  • Average visibility in September: 9km

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

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