September weather forecast
Koumogo, Chad

September

Weather in September

September continues the monsoon trends of August with rainfall of 91mm (3.58"), albeit much lower and a slide down in temperatures to 31.1°C (88°F). The cloud coverage starts to reduce, leading to an increase in sunshine hours and a steady improvement in visibility. The wind speed picks up the pace as the pressure starts to normalize after the peak monsoons.

Temperature

The shift into September reveals an average high-temperature of a tropical 31.1°C (88°F), closely mirroring August's climate. During September nights, Koumogo witnesses a consistent average temperature of 22.6°C (72.7°F).

Heat index

In September, the average heat index is computed to be a blisteringly hot 41°C (105.8°F). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.
When considering the heat index, it's pivotal to note it is for shade and mild wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often lack awareness of the importance of taking breaks and rehydrating. The feeling of thirst is a late indication of dehydration, so maintaining hydration, especially during long periods of physical activity, is critical.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. Potential thermal conditions emerge as the body's heat gain outpaces its cooling mechanisms.

Humidity

The average relative humidity in September is 79%.

Rainfall

In September, the rain falls for 22.6 days. Throughout September, 91mm (3.58") of precipitation is accumulated. In Koumogo, during the entire year, the rain falls for 128.4 days and collects up to 608mm (23.94") of precipitation.

Daylight

In September, the average length of the day is 12h and 10min.
On the first day of September, sunrise is at 05:38 and sunset at 17:55. On the last day of the month, sunrise is at 05:35 and sunset at 17:38 WAT.

Sunshine

The average sunshine in September is 8.7h.

UV index

In Koumogo, the average daily maximum UV index in September is 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 7 in September, converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Enhance your sun protection with tightly woven, yet airy clothing.

Frequently asked questions

Is it hot during September?
During September, Koumogo experiences an average high-temperature of 31.1°C (88°F) and a low-temperature of 22.6°C (72.7°F). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines relative humidity and air temperature, in September is computed to be 41°C (105.8°F).
What is the average humidity in September?
In September, the average relative humidity is 79%.
How many days does it rain in September?
In Koumogo, during September, the rain falls for 22.6 days and regularly aggregates up to 91mm (3.58") of precipitation.
What is the average length of the day in September?
In September, the average day length is 12h and 10min.
When are sunrise and sunset in September?
On the first day of September, sunrise is at 05:38 and sunset at 17:55. On the last day of the month, sunrise is at 05:35 and sunset at 17:38 WAT.
How long on average sun shines in September?
In September, the average sunshine duration is 8.7h.
How high is the UV index in September in Koumogo?
In September, the average daily maximum UV index 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 - Koumogo, Chad
Average temperature in September
Koumogo, Chad
  • Average high temperature in September: 31.1°C

The warmest month (with the highest average high temperature) is March (41.1°C).
The month with the lowest average high temperature is August (29.4°C).

  • Average low temperature in September: 22.6°C

The month with the highest average low temperature is April (28.4°C).
The coldest month (with the lowest average low temperature) is January (21.9°C).

Average pressure in September - Koumogo, Chad
Average pressure in September
Koumogo, Chad
  • Average pressure in September: 1010.7mbar

The month with the highest atmospheric pressure is August (1011.3mbar).
The month with the lowest atmospheric pressure is April (1006.1mbar).

Average wind speed in September - Koumogo, Chad
Average wind speed in September
Koumogo, Chad
  • Average wind speed in September: 6km/h

The windiest month (with the highest average wind speed) is January (10.8km/h).
The calmest month (with the lowest average wind speed) is September (6km/h).

Average humidity in September - Koumogo, Chad
Average humidity in September
Koumogo, Chad
  • Average humidity in September: 79%

The month with the highest relative humidity is August (83%).
The months with the lowest relative humidity are January and February (15%).

Average rainfall in September - Koumogo, Chad
Average rainfall in September
Koumogo, Chad
  • Average rainfall in September: 91mm

The wettest month (with the highest rainfall) is August (185mm).
The driest months (with the least rainfall) are January and December (0mm).

Average rainfall days in September - Koumogo, Chad
Average rainfall days in September
Koumogo, Chad
  • Average rainfall days in September: 22.6 days

The month with the highest number of rainy days is August (28.5 days).
The month with the least rainy days is January (0 days).

Average daylight in September / Average sunshine in September - Koumogo, Chad
Average daylight in September /
Average sunshine in September
Koumogo, Chad
  • Average daylight in September: 12h and 1min

The month with the longest days is June (Average daylight: 12h and 36min).
The month with the shortest days is December (Average daylight: 11h and 36min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 24min).
The months with the least sunshine are January and February (Average sunshine: 7h and 42min).

Average sunshine days in September - Koumogo, Chad
Average sunshine days in September
Koumogo, Chad
  • Average sunshine days in September: 5.4 days

The month with the most sunshine days is January (31 days).
The month with the least sunshine days is August (1.5 days).

Average UV index in September - Koumogo, Chad
Average UV index in September
Koumogo, Chad
  • Average UV index in September: 7

The months with the highest UV index are February, March, April and May (UV index 8).
The month with the lowest UV index is July (UV index 6).

Average cloud cover in September - Koumogo, Chad
Average cloud cover in September
Koumogo, Chad
  • Average cloud cover in September: 34

The month with the most cloud cover is August (Cloud cover 47).
The month with the least cloud cover is January (Cloud cover 1).

Average visibility in September - Koumogo, Chad
Average visibility in September
Koumogo, Chad
  • Average visibility in September: 9km

The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The month with the lowest visibility is August (8km).

englishespañol中文
Share