September weather forecastInkolonie, Benin
September
Weather in September
September in Inkolonie, Benin serves as a gentle transition from the rainy to the dry season. Rainfall begins its gradual descent, humidity lessens, and temperatures begin to creep upward. Precipitation still records a substantial 138mm (5.43") across 26.7 days, marking the month’s end of high-intensity downpours. The change in seasons gives way to clear, deep-blue skies and a return of comforting warmth.Temperature
September's average high-temperature is a still warm 29.5°C (85.1°F), maintaining a close comparison with August's 28°C (82.4°F). Inkolonie, during the nights of September, experiences an average temperature drop to a pleasant 21.3°C (70.3°F).Heat index
The average heat index in September is appraised at a torrid 38°C (100.4°F). Incorporate extra safety measures to avoid heat exhaustion and heat cramps. Continuous activity could provoke heatstroke.When assessing, remember that heat index measurements are for light winds and shaded spots. Direct sunlight exposure may cause a 15 Fahrenheit (8 Celsius) degrees rise in the heat index.
Note: The heat index, also known as 'felt air temperature' or 'feels like', gauges the sensation of temperature factoring in the air's moisture content. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.
Humidity
The average relative humidity in September is 86%.Rainfall
In Inkolonie, in September, during 26.7 rainfall days, 138mm (5.43") of precipitation is typically accumulated. Throughout the year, there are 180.8 rainfall days, and 831mm (32.72") of precipitation is accumulated.Daylight
The average length of the day in September is 12h and 10min.On the first day of September, sunrise is at 06:45 and sunset at 19:02. On the last day of the month, sunrise is at 06:42 and sunset at 18:45 WAT.
Sunshine
In Inkolonie, the average sunshine in September is 7h.UV index
In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: An average UV index of 7 in September transforms into this advice:
Exercise precautions and adapt sun safety practices. Defence against skin and eye affliction is paramount. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Inkolonie, Benin
- Average high temperature in September: 29.5°C
The warmest month (with the highest average high temperature) is March (38.1°C).
The month with the lowest average high temperature is August (28°C).
- Average low temperature in September: 21.3°C
The month with the highest average low temperature is April (24.2°C).
The coldest month (with the lowest average low temperature) is January (18.7°C).
Average pressure in September
Inkolonie, Benin
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is July (1013.1mbar).
The month with the lowest atmospheric pressure is March (1008.6mbar).
Average wind speed in September
Inkolonie, Benin
- Average wind speed in September: 4.9km/h
The windiest month (with the highest average wind speed) is January (7km/h).
The calmest month (with the lowest average wind speed) is September (4.9km/h).
Average humidity in September
Inkolonie, Benin
- Average humidity in September: 86%
The month with the highest relative humidity is August (87%).
The month with the lowest relative humidity is January (23%).
Average rainfall in September
Inkolonie, Benin
- Average rainfall in September: 138mm
The wettest month (with the highest rainfall) is August (156mm).
The driest month (with the least rainfall) is December (0mm).
Average rainfall days in September
Inkolonie, Benin
- Average rainfall days in September: 26.7 days
The month with the highest number of rainy days is August (28.4 days).
The month with the least rainy days is January (0.4 days).
Average daylight in September /
Average sunshine in September
Inkolonie, Benin
- 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 36min).
- Average sunshine in September: 7h and 0min
The month with the most sunshine is April (Average sunshine: 11h and 42min).
The month with the least sunshine is August (Average sunshine: 6h and 54min).
Average sunshine days in September
Inkolonie, Benin
- Average sunshine days in September: 2.4 days
The month with the most sunshine days is December (30.5 days).
The month with the least sunshine days is August (1.8 days).
Average UV index in September
Inkolonie, Benin
- Average UV index in September: 7
The month with the highest UV index is March (UV index 8).
The months with the lowest UV index are June, July and August (UV index 6).
Average cloud cover in September
Inkolonie, Benin
- Average cloud cover in September: 51
The month with the most cloud cover is August (Cloud cover 61).
The month with the least cloud cover is December (Cloud cover 4).
Average visibility in September
Inkolonie, Benin
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, November and December (10km).
The months with the lowest visibility are July, August and September (7km).





