September weather forecastBayakou, Benin
September
Weather in September
September marks the end of the rainy season in Bayakou, being the last month of above-average rainfall. The average temperature rebounds to 29.8°C (85.6°F), and humidity recedes to 83 %, denoting the advent of the dry season. As the month progresses, the rain showers dissipate, enabling sunlight to wash over the city. As evening falls, the cityscape is adorned with beautiful hues of sunset. Embracing the dawn of a new season, the residents welcome the decreased precipitation.Temperature
Bayakou, Benin, experiences an average high-temperature of a still warm 29.8°C (85.6°F) in September, marking an insignificant shift from 28.5°C (83.3°F) in August. Throughout September, Bayakou experiences a low-temperature average of 21.9°C (71.4°F).Heat index
The heat index for September is calculated to be a sweltering 38°C (100.4°F). Implement more safety precautions, heat cramps and heat exhaustion may happen. Persistent activity could induce heatstroke.One should consider that heat index numbers are for shaded settings and light wind. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', quantifies the warmth felt when relative humidity is considered. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for 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, followed by sweat evaporation, is the human body's chief method to maintain a balanced temperature. An elevated level of relative humidity hinders evaporation, leading to decreased heat elimination from the body, inducing a sensation of excess heat. Rising body temperatures resulting from an imbalance in heat absorption can lead to potential thermal issues.
Humidity
In September, the average relative humidity in Bayakou is 83%.Rainfall
In Bayakou, Benin, in September, it is raining for 22.6 days, with typically 93mm (3.66") of accumulated precipitation. In Bayakou, Benin, during the entire year, the rain falls for 134.6 days and collects up to 596mm (23.46") of precipitation.Daylight
The average length of the day in September is 12h and 10min.On the first day of the month, sunrise is at 06:44 and sunset at 19:01. On the last day of September, in Bayakou, sunrise is at 06:41 and sunset at 18:44 WAT.
Sunshine
In September, the average sunshine in Bayakou is 8.1h.UV index
In September, the average daily maximum UV index is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 7 in September converts into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. 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.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bayakou, Benin
- Average high temperature in September: 29.8°C
The warmest month (with the highest average high temperature) is March (39°C).
The month with the lowest average high temperature is August (28.5°C).
- Average low temperature in September: 21.9°C
The month with the highest average low temperature is April (24.8°C).
The coldest month (with the lowest average low temperature) is January (17.9°C).
Average pressure in September
Bayakou, Benin
- Average pressure in September: 1012.4mbar
The month with the highest atmospheric pressure is July (1012.9mbar).
The months with the lowest atmospheric pressure are March and April (1008.6mbar).
Average wind speed in September
Bayakou, Benin
- Average wind speed in September: 5.5km/h
The windiest months (with the highest average wind speed) are January and May (8.1km/h).
The calmest month (with the lowest average wind speed) is September (5.5km/h).
Average humidity in September
Bayakou, Benin
- Average humidity in September: 83%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is January (19%).
Average rainfall in September
Bayakou, Benin
- Average rainfall in September: 93mm
The wettest month (with the highest rainfall) is August (149mm).
The driest months (with the least rainfall) are January and December (0mm).
Average rainfall days in September
Bayakou, Benin
- Average rainfall days in September: 22.6 days
The month with the highest number of rainy days is August (25.8 days).
The month with the least rainy days is December (0.2 days).
Average daylight in September /
Average sunshine in September
Bayakou, 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: 8h and 6min
The months with the most sunshine are January, November and December (Average sunshine: 10h and 0min).
The month with the least sunshine is August (Average sunshine: 6h and 30min).
Average sunshine days in September
Bayakou, Benin
- Average sunshine days in September: 5.5 days
The month with the most sunshine days is December (30.9 days).
The month with the least sunshine days is August (3.3 days).
Average UV index in September
Bayakou, Benin
- Average UV index in September: 7
The months with the highest UV index are February, March and April (UV index 8).
The months with the lowest UV index are July, August and December (UV index 6).
Average cloud cover in September
Bayakou, Benin
- Average cloud cover in September: 44
The month with the most cloud cover is August (Cloud cover 57).
The month with the least cloud cover is December (Cloud cover 3).
Average visibility in September
Bayakou, Benin
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, November and December (10km).
The month with the lowest visibility is August (7km).





