September weather forecast
Biltine, Chad

The arrival of September signals a significant shift in the weather of Biltine, Chad, as the rainy season starts to phase out. Rainfall steadily decreases from its highest level in August to a more manageable 64mm (2.52"). Subsequently, the cloud cover reduces nearly by half, letting more sunshine into the city. Average temperatures begin to rise again, reaching 35.2°C (95.4°F) during the day. The high temperature coincides with a decreased humidity level, bringing it down to 47%.

Temperature

A soft shift in the average high-temperature is noticeable in September, transitioning from a tropical 32.2°C (90°F) in August to a sweltering 35.2°C (95.4°F). In the month of September, the nighttime temperature in Biltine, Chad, dips to a steady average of 26.1°C (79°F).

Heat index

The average heat index in September is evaluated at a blisteringly hot 40°C (104°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.
Consider that heat index readings are for situations in the shade and light wind. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In September, the average relative humidity in Biltine is 47%.

Rainfall

In Biltine, during September, the rain falls for 12.3 days and regularly aggregates up to 64mm (2.52") of precipitation. Throughout the year, there are 70.2 rainfall days, and 432mm (17.01") of precipitation is accumulated.

Daylight

In Biltine, the average length of the day in September is 12h and 13min.
On the first day of September, sunrise is at 05:24 and sunset at 17:48. On the last day of the month, sunrise is at 05:25 and sunset at 17:26 WAT.

Sunshine

In Biltine, the average sunshine in September is 9.6h.

UV index

The months with the highest UV index are February through June, September and October, with an average maximum UV index of 8. A UV Index of 8 to 10 symbolizes a very high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 8 in September translates into these instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.