September weather forecast and climate
N'Djamena, Chad

The first month of the autumn, September, is still a hot month in N'Djamena, Chad, with average temperature fluctuating between 33.7°C (92.7°F) and 22.7°C (72.9°F).

Temperature

In N'Djamena, Chad, the average high-temperature is essentially the same as in August - a still hot 33.7°C (92.7°F). In September, the average low-temperature is 22.7°C (72.9°F).

Heat index

In September, the average heat index is evaluated at a life-threatening hot 46.7°C (116.1°F). Beware - heat cramps and heat exhaustion are very likely. Heatstroke is imminent with prolonged activity.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'apparent temperature', 'real feel', or 'feels like', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, clothing, pregnancy, and wind affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September is 72%.

Rainfall

In N'Djamena, in September, it is raining for 9 days, with typically 84.3mm (3.32") of accumulated precipitation. In N'Djamena, during the entire year, the rain falls for 60 days and collects up to 510.3mm (20.09") of precipitation.

Daylight

The average length of the day in September is 12.2h.

Sunshine

In N'Djamena, the average sunshine is 7.6h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an extreme threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 12 in September transform into the following instructions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. 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. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.