September weather forecast
Boulwando, Burkina Faso

As September approaches, there is a noticeable decline in the rainfall, indicating the start of the retracting monsoon. The subsiding rains do not impact the lush green sceneries which can still be enjoyed abundantly. The lowering rainfall accompanies a gradual decrease in temperature which provides a pleasant climate for tourists. Observing a considerable decrease from previous months, September experiences rainfall measuring 45mm (1.77"). The reduction in rain showers marks the onset of the dry spell - a characteristic feature of Boulwando’s tropical climate.

Temperature

The advent of September reveals an average high-temperature of a still tropical 33.5°C (92.3°F), showing minimal difference from the prior month. During September, Boulwando's temperature falls to a steady low-temperature average of 24.2°C (75.6°F).

Heat index

For most parts of September, the heat index is calculated to be a scorching 43°C (109.4°F). Precaution: Heat cramps along with heat exhaustion are possible. Heatstroke is a serious risk with continued exertion.
Be advised, the heat index considers values for conditions in shade and with a light breeze. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. Given the impact of direct sunlight, it's noteworthy that the felt temperature can rise by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Under high air temperature coupled with high humidity (high heat index), the body's perspiration is reduced, intensifying the sensation of heat. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

In Boulwando, the average relative humidity in September is 65%.

Rainfall

In Boulwando, in September, during 12.7 rainfall days, 45mm (1.77") of precipitation is typically accumulated. Throughout the year, there are 77.9 rainfall days, and 310mm (12.2") of precipitation is accumulated.

Daylight

In Boulwando, the average length of the day in September is 12h and 12min.
On the first day of September, sunrise is at 05:52 and sunset at 18:13. On the last day of the month, sunrise is at 05:52 and sunset at 17:53 GMT.

Sunshine

In Boulwando, the average sunshine in September is 11h.

UV index

The months with the highest UV index are March through June and September, with an average maximum UV index of 8. A UV Index of 8 to 10 symbolizes a very high health hazard from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 8 during September translates into these guidelines:
Never neglect to protect yourself. Eyes and skin can suffer swift damage. 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. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.