September brings a gradual end to the rainiest phase in
Bamako with a reduction in rainfall to 196mm (7.72") and a slight decrease in average high temperatures to 32.2°C (90°F). The humidity levels attentive to the rainfall, start retreating but remain high at 78%. Equally enticing for locals and visitors alike are the greenery and the haggling markets, resuming business as the weather begins to make a shift towards the drier season.
Temperature
As September takes its course, Bamako's average high-temperature registers at a still tropical 32.2°C (90°F), closely aligning with the preceding month. Throughout the month of September, the average temperature in Bamako dips to an agreeable 21.6°C (70.9°F) at night.
Heat index
The average heat index in September is evaluated at a blistering 44°C (111.2°F).
Careful: Heat exhaustion and heat cramps are anticipated. With ongoing exertion, heatstroke becomes a possibility.
One should be cognizant that the heat index values are tailored for shaded spots and mild winds. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives a temperature feeling by integrating air temperature and humidity. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.
The innate cooling system of the human body revolves around perspiration, with the evaporation of sweat being central to this process. When there is an excess of moisture in the atmosphere, the efficiency of the evaporation process is lessened, leading to less efficient body cooling and a sensation of overheating. When the heat gained surpasses the body's cooling capacity, temperatures rise, signaling potential health concerns.
Humidity
In September, the average relative humidity is 78%.
Rainfall
In Bamako, in September, during 14.7 rainfall days, 196mm (7.72") of precipitation is typically accumulated. In Bamako, during the entire year, the rain falls for 73.7 days and collects up to 991mm (39.02") of precipitation.
Daylight
The average length of the day in September is 12h and 12min.
On the first day of the month, sunrise is at 06:21 and sunset at 18:42. On the last day of September, in Bamako, sunrise is at 06:21 and sunset at 18:22 GMT.
Sunshine
In September, the average sunshine in Bamako is 7.4h.
UV index
The months with the highest UV index in Bamako are
February through September, with an average maximum UV index of 12. A UV Index of 11, and more, symbolizes an excessive health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: An average maximum UV index of 12 in September leads to these recommendations:
Carry out all crucial safety measures, unprotected skin may burn instantly. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Despite the overcast weather, sunscreen with SPF of at least 30 should be applied liberally and reapplied often, particularly after swimming or an outdoor workout.