September weather forecast
Koussanar, Senegal

September

Weather in September

Transitioning into September, Koussanar starts to see a slow tapering off of the rainy season. The gradual weather change prepares residents for the upcoming switch. Even though the level of precipitation drops to 87mm (3.43"), it still remains considerably high. This month also witnesses the year’s lowest average wind speed, providing smooth and calm breezy evenings. Amid the clear visibility and lesser hours of daylight, September adorns Koussanar with a scenic and charming ambience.

Temperature

Koussanar's transition from August to September introduces an average high-temperature of a still hot 33.5°C (92.3°F), marking an insignificant variation from the 33°C (91.4°F). During September nights, Koussanar witnesses a consistent average temperature of 24.2°C (75.6°F).

Heat index

The heat index value for September is calculated to be a life-threatening hot 48°C (118.4°F). Remain alert: Heat exhaustion and heat cramps are predicted. Extended effort can lead to heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Keep aware, the sun, when shining directly, can intensify the heat experience, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. High relative humidity reduces the evaporation rate, resulting in a lower heat removal rate from the body, causing the perception of being overheated. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The months with the highest humidity are August and September, with an average relative humidity of 76%.

Rainfall

In Koussanar, during September, the rain falls for 18.8 days and regularly aggregates up to 87mm (3.43") of precipitation. Throughout the year, there are 82.3 rainfall days, and 373mm (14.69") of precipitation is accumulated.

Daylight

In September, the average length of the day is 12h and 13min.
On the first day of the month, sunrise is at 06:44 and sunset at 19:07. On the last day of September, sunrise is at 06:45 and sunset at 18:46 GMT.

Sunshine

The average sunshine in September in Koussanar is 8.8h.

UV index

January, February, July through September and December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 7 translates into these guidelines:
Shun overexposure. Protection from sun ravages is indispensable. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.

Frequently asked questions

How hot does it get in September?
An average high-temperature, in September, in Koussanar, is 33.5°C (92.3°F) and the average low-temperature is 24.2°C (75.6°F). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in September is calculated to be 48°C (118.4°F).
What is the most humid month?
The months with the highest humidity are August and September, with an average relative humidity of 76%.
What is the average humidity in September?
In September, the average relative humidity is 76%.
How many days does it rain in September?
In September, the rain falls for 18.8 days. Throughout September, 87mm (3.43") of precipitation is accumulated.
What is the average length of the day in September?
In September, the average day length is 12h and 13min.
What time are sunrise and sunset in September?
On the first day of September, sunrise is at 06:44 and sunset at 19:07. On the last day of the month, sunrise is at 06:45 and sunset at 18:46 GMT.
How long on average sun shines in September?
In September, the average sunshine duration in Koussanar is 8.8h.
What is the month with the lowest UV index?
The months with the lowest UV index are January, February, July through September and December, with an average maximum UV index of 7.
How high is the UV index in September?
In Koussanar, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV radiation.
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 - Koussanar, Senegal
Average temperature in September
Koussanar, Senegal
  • Average high temperature in September: 33.5°C

The warmest month (with the highest average high temperature) is April (42.4°C).
The month with the lowest average high temperature is August (33°C).

  • Average low temperature in September: 24.2°C

The month with the highest average low temperature is June (27.9°C).
The coldest month (with the lowest average low temperature) is January (19.1°C).

Average pressure in September - Koussanar, Senegal
Average pressure in September
Koussanar, Senegal
  • Average pressure in September: 1011.5mbar

The month with the highest atmospheric pressure is January (1012.1mbar).
The month with the lowest atmospheric pressure is April (1008.5mbar).

Average wind speed in September - Koussanar, Senegal
Average wind speed in September
Koussanar, Senegal
  • Average wind speed in September: 7.8km/h

The windiest month (with the highest average wind speed) is February (12.8km/h).
The calmest month (with the lowest average wind speed) is September (7.8km/h).

Average humidity in September - Koussanar, Senegal
Average humidity in September
Koussanar, Senegal
  • Average humidity in September: 76%

The months with the highest relative humidity are August and September (76%).
The months with the lowest relative humidity are January and February (14%).

Average rainfall in September - Koussanar, Senegal
Average rainfall in September
Koussanar, Senegal
  • Average rainfall in September: 87mm

The wettest month (with the highest rainfall) is August (149mm).
The driest months (with the least rainfall) are January, February and December (0mm).

Average rainfall days in September - Koussanar, Senegal
Average rainfall days in September
Koussanar, Senegal
  • Average rainfall days in September: 18.8 days

The month with the highest number of rainy days is August (22.1 days).
The month with the least rainy days is January (0 days).

Average daylight in September / Average sunshine in September - Koussanar, Senegal
Average daylight in September /
Average sunshine in September
Koussanar, 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 5min

The month with the most sunshine is April (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 7h and 36min).

Average sunshine days in September - Koussanar, Senegal
Average sunshine days in September
Koussanar, Senegal
  • Average sunshine days in September: 9.1 days

The month with the most sunshine days is January (30.8 days).
The month with the least sunshine days is August (6.8 days).

Average UV index in September - Koussanar, Senegal
Average UV index in September
Koussanar, Senegal
  • Average UV index in September: 7

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

Average cloud cover in September - Koussanar, Senegal
Average cloud cover in September
Koussanar, Senegal
  • Average cloud cover in September: 31

The month with the most cloud cover is August (Cloud cover 44).
The months with the least cloud cover are March and April (Cloud cover 6).

Average visibility in September - Koussanar, Senegal
Average visibility in September
Koussanar, 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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