September weather forecastDiou, Mali
September
Weather in September
The first month of the autumn, September, is a tropical month in Diou, Mali, with an average temperature ranging between max 31.4°C (88.5°F) and min 21.6°C (70.9°F).Temperature
September denotes a minimal variation in the average high-temperature to a tropical 31.4°C (88.5°F) from August's 29.7°C (85.5°F). September's average low-temperature reading settles at an agreeable 21.6°C (70.9°F).Heat index
In September, the heat index is calculated to be a blisteringly hot 41°C (105.8°F). More preventive actions are needed, risk of heat exhaustion and heat cramps is significant. Prolonged activity may trigger heatstroke.The metrics for the heat index are tailored for both shady environments and light winds. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Be mindful that being in direct sunlight might mean feeling hotter, with the heat index rising by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Heat-related complications, like dehydration, can manifest if the body's heat gain exceeds its dissipation capacity.
Humidity
The average relative humidity in September is 78%.Rainfall
In Diou, Mali, in September, during 22.4 rainfall days, 93mm (3.66") of precipitation is typically accumulated. Throughout the year, in Diou, there are 132.5 rainfall days, and 578mm (22.76") of precipitation is accumulated.Daylight
In Diou, the average length of the day in September is 12h and 11min.On the first day of September, sunrise is at 06:14 and sunset at 18:33. On the last day of the month, sunrise is at 06:12 and sunset at 18:14 GMT.
Sunshine
In September, the average sunshine is 8.8h.UV index
The average daily maximum UV index in September is 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 7 suggests these recommendations:
Escape overexposure. People with light skin may incur burns in fewer than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Diou, Mali
- Average high temperature in September: 31.4°C
The warmest month (with the highest average high temperature) is April (39.6°C).
The month with the lowest average high temperature is August (29.7°C).
- Average low temperature in September: 21.6°C
The month with the highest average low temperature is April (26.5°C).
The coldest month (with the lowest average low temperature) is January (19°C).
Average pressure in September
Diou, Mali
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is August (1012.2mbar).
The month with the lowest atmospheric pressure is April (1008.2mbar).
Average wind speed in September
Diou, Mali
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is January (9.9km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).
Average humidity in September
Diou, Mali
- Average humidity in September: 78%
The month with the highest relative humidity is August (83%).
The month with the lowest relative humidity is January (15%).
Average rainfall in September
Diou, Mali
- Average rainfall in September: 93mm
The wettest month (with the highest rainfall) is August (187mm).
The driest month (with the least rainfall) is December (0mm).
Average rainfall days in September
Diou, Mali
- Average rainfall days in September: 22.4 days
The month with the highest number of rainy days is August (26.7 days).
The month with the least rainy days is December (0.1 days).
Average daylight in September /
Average sunshine in September
Diou, Mali
- Average daylight in September: 12h and 12min
The month with the longest days is June (Average daylight: 12h and 42min).
The month with the shortest days is December (Average daylight: 11h and 30min).
- Average sunshine in September: 8h and 48min
The month with the most sunshine is May (Average sunshine: 10h and 48min).
The month with the least sunshine is August (Average sunshine: 7h and 30min).
Average sunshine days in September
Diou, Mali
- Average sunshine days in September: 5.8 days
The month with the most sunshine days is December (30.6 days).
The month with the least sunshine days is August (3.6 days).
Average UV index in September
Diou, Mali
- Average UV index in September: 7
The months with the highest UV index are February, March, April and May (UV index 8).
The months with the lowest UV index are July, August and December (UV index 6).
Average cloud cover in September
Diou, Mali
- Average cloud cover in September: 34
The month with the most cloud cover is August (Cloud cover 48).
The month with the least cloud cover is December (Cloud cover 6).
Average visibility in September
Diou, Mali
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (10km).
The month with the lowest visibility is August (8km).





