September weather forecastBirni, Benin
September
Weather in September
The first month of the autumn, September, is still a warm month in Birni, Benin, with temperature in the range of an average high of 29.8°C (85.6°F) and an average low of 21.9°C (71.4°F).Temperature
Birni's transition from August to September introduces an average high-temperature of a still moderately hot 29.8°C (85.6°F), marking an insignificant variation from the 28.5°C (83.3°F). During September, Birni sees a mean low-temperature of 21.9°C (71.4°F).Heat index
The heat index value during September is appraised at a fiery hot 38°C (100.4°F). Take more preventive steps, risk of heat exhaustion and heat cramps is elevated. Long activity may culminate in heatstroke.Heat index details are generally centered around shaded locations and a mild breeze. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. A person's impression of weather can be affected by numerous aspects, among them metabolic variations, pregnancy, and activity levels. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.
Humidity
The average relative humidity in September is 83%.Rainfall
In Birni, during September, the rain falls for 22.6 days and regularly aggregates up to 93mm (3.66") of precipitation. Throughout the year, there are 134.6 rainfall days, and 596mm (23.46") of precipitation is accumulated.Daylight
In September, the average length of the day is 12h and 11min.On the first day of the month, sunrise is at 06:44 and sunset at 19:02. On the last day of September, sunrise is at 06:42 and sunset at 18:44 WAT.
Sunshine
In September, the average sunshine is 8.1h.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 unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 7 turns into the following recommendations:
Guard against overexposure. Protection from sun-induced harm is essential. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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
Birni, 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).
