September weather forecast
Ouagadougou, Burkina Faso

Weather in September in Ouagadougou sees a significant decrease in rainfall to 139mm (5.47"), marking a shift towards the end of the rainy season. With this decline in rainfall, there's a consequent retreat in cloud cover, resulting in increased sunshine hours. Consistent with August, the temperatures stay relatively warm. A downward trend is observed in humidity, indicating a clear progression towards drier weather. The UV index remains considerably high, although somewhat less than the peak months.

Temperature

Ouagadougou records an average high-temperature of a still hot 32°C (89.6°F) as September arrives, nearly mirroring the previous month's climate. September's nights observe an average temperature of 21.9°C (71.4°F).

Heat index

The heat index value during September is estimated at an extremely hot 40°C (104°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Heat index's context suggests values are appropriate for shady areas and slight breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. With body temperatures on the rise, inefficient heat shedding can lead to dehydration and its associated complications.

Humidity

In Ouagadougou, the average relative humidity in September is 69.5%.

Rainfall

In Ouagadougou, in September, during 5.7 rainfall days, 139mm (5.47") of precipitation is typically accumulated. Throughout the year, there are 35.2 rainfall days, and 788mm (31.02") of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 05:55 and sunset at 18:16. On the last day of September, sunrise is at 05:55 and sunset at 17:56 GMT.

Sunshine

The average sunshine in September is 7h.

UV index

February through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme health hazard from exposure to the Sun's UV radiation for the average person.
Note: In September, a daily maximum UV index of 12 leads to the following instructions:
Employ every precaution of importance, unprotected skin and eyes could burn within moments. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Prompt application of a broad-spectrum sunscreen, SPF 30+, is necessary after a swim or an outdoor workout and it should be re-applied every two hours.