September weather forecastBétou, Congo
September
Weather in September
September in Bétou, Congo shows signs of the wet season drawing to an end. The month brings a minutely reduced rainfall of 120mm (4.72"). The decrease in showers brings about a mild drop in humidity, paving the way for more enjoyable weather conditions. Echoes of the vibrant city life grow louder this month, with locals and tourists making the most of the dwindling rains. Despite the reduced precipitation, the city remains shrouded in lush greenery.Temperature
In September, Bétou experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 29.5°C (85.1°F) in August to a still warm 29.6°C (85.3°F). During September, the nighttime temperature in Bétou averages to a pleasant 20.4°C (68.7°F).Heat index
The heat index value during September is estimated at a sweltering 38°C (100.4°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.Always consider that heat index estimations are for light winds and places in the shade. Heat index values can rise by 15 Fahrenheit (8 Celsius) degrees when in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', gives a temperature feeling by integrating air temperature and humidity. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. 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 human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
In Bétou, the average relative humidity in September is 84%.Rainfall
In Bétou, during September, the rain falls for 27.4 days and regularly aggregates up to 120mm (4.72") of precipitation. In Bétou, during the entire year, the rain falls for 242.9 days and collects up to 1067mm (42.01") of precipitation.Daylight
The average length of the day in September is 12h and 8min.On the first day of the month, sunrise is at 05:40 and sunset at 17:50. On the last day of September, sunrise is at 05:33 and sunset at 17:38 WAT.
Sunshine
The average sunshine in September in Bétou is 8h.UV index
The months with the lowest UV index in Bétou, Congo, are May through October, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.Note: The daily high UV index of 6 in September translates into this advice:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Enhance your sun protection with tightly woven, yet airy clothing.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bétou, Congo
- Average high temperature in September: 29.6°C
The warmest months (with the highest average high temperature) are January and February (35.7°C).
The month with the lowest average high temperature is August (29.5°C).
- Average low temperature in September: 20.4°C
The months with the highest average low temperature are February and March (22.3°C).
The coldest month (with the lowest average low temperature) is September (20.4°C).
Average pressure in September
Bétou, Congo
- Average pressure in September: 1011.5mbar
The month with the highest atmospheric pressure is July (1012.1mbar).
The month with the lowest atmospheric pressure is February (1008.1mbar).
Average wind speed in September
Bétou, Congo
- Average wind speed in September: 4.5km/h
The windiest month (with the highest average wind speed) is April (6.5km/h).
The calmest month (with the lowest average wind speed) is October (4.2km/h).
Average humidity in September
Bétou, Congo
- Average humidity in September: 84%
The month with the highest relative humidity is October (86%).
The month with the lowest relative humidity is January (45%).
Average rainfall in September
Bétou, Congo
- Average rainfall in September: 120mm
The wettest month (with the highest rainfall) is October (171mm).
The driest month (with the least rainfall) is January (8mm).
Average rainfall days in September
Bétou, Congo
- Average rainfall days in September: 27.4 days
The month with the highest number of rainy days is October (29.1 days).
The month with the least rainy days is January (4.8 days).
Average daylight in September /
Average sunshine in September
Bétou, Congo
- Average daylight in September: 12h and 6min
The month with the longest days is June (Average daylight: 12h and 18min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is January (Average sunshine: 9h and 54min).
The month with the least sunshine is October (Average sunshine: 7h and 36min).
Average sunshine days in September
Bétou, Congo
- Average sunshine days in September: 2.1 days
The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is October (1.5 days).
Average UV index in September
Bétou, Congo
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, November and December (UV index 7).
The months with the lowest UV index are May, June, July, August, September and October (UV index 6).
Average cloud cover in September
Bétou, Congo
- Average cloud cover in September: 48
The month with the most cloud cover is October (Cloud cover 51).
The month with the least cloud cover is January (Cloud cover 13).
Average visibility in September
Bétou, Congo
- Average visibility in September: 7km
The months with the highest visibility are January, February, March and December (10km).
The months with the lowest visibility are August, September and October (7km).





