September weather forecastBoyelle, Congo
September
Weather in September
September, the first month of the autumn in Boyelle, is still a hot month, with an average temperature varying between 31.2°C (88.2°F) and 21.1°C (70°F).Temperature
The transition into September reveals an average high-temperature of a still hot 31.2°C (88.2°F), mirroring a close resemblance to August. Boyelle usually reports an average low-temperature of 21.1°C (70°F) during the month of September.Heat index
The heat index for September is calculated to be a scorching 42°C (107.6°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.Take into consideration that the heat index values are calculated for shade and light wind conditions. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'feels like' or 'real feel', is a single figure representing how weather conditions feel when combining temperature and humidity. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Perspiration is essential for the human body; it facilitates cooling through the process of sweat evaporation. 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 the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
In Boyelle, the average relative humidity in September is 81%.Rainfall
In Boyelle, in September, it is raining for 25.4 days, with typically 107mm (4.21") of accumulated precipitation. Throughout the year, in Boyelle, there are 235.6 rainfall days, and 906mm (35.67") of precipitation is accumulated.Daylight
The average length of the day in September in Boyelle is 12h and 8min.On the first day of September in Boyelle, sunrise is at 05:42 and sunset at 17:51. On the last day of the month, sunrise is at 05:34 and sunset at 17:39 WAT.
Sunshine
In September, the average sunshine is 8.2h.UV index
The months with the lowest UV index in Boyelle, Congo, are August through October, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 6 during September leads to these advisories:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Boyelle, Congo
- Average high temperature in September: 31.2°C
The warmest month (with the highest average high temperature) is January (36.2°C).
The month with the lowest average high temperature is October (31°C).
- Average low temperature in September: 21.1°C
The month with the highest average low temperature is February (22.4°C).
The coldest month (with the lowest average low temperature) is September (21.1°C).
Average pressure in September
Boyelle, Congo
- Average pressure in September: 1011.4mbar
The month with the highest atmospheric pressure is July (1011.9mbar).
The month with the lowest atmospheric pressure is February (1008.4mbar).
Average wind speed in September
Boyelle, Congo
- Average wind speed in September: 4km/h
The windiest month (with the highest average wind speed) is March (5.1km/h).
The calmest month (with the lowest average wind speed) is October (3.7km/h).
Average humidity in September
Boyelle, Congo
- Average humidity in September: 81%
The month with the highest relative humidity is October (82%).
The month with the lowest relative humidity is January (51%).
Average rainfall in September
Boyelle, Congo
- Average rainfall in September: 107mm
The wettest month (with the highest rainfall) is October (136mm).
The driest month (with the least rainfall) is December (18mm).
Average rainfall days in September
Boyelle, Congo
- Average rainfall days in September: 25.4 days
The month with the highest number of rainy days is October (27.7 days).
The month with the least rainy days is January (7.3 days).
Average daylight in September /
Average sunshine in September
Boyelle, 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 12min
The month with the most sunshine is January (Average sunshine: 10h and 12min).
The month with the least sunshine is October (Average sunshine: 7h and 48min).
Average sunshine days in September
Boyelle, Congo
- Average sunshine days in September: 3.4 days
The month with the most sunshine days is January (21.3 days).
The month with the least sunshine days is October (1.8 days).
Average UV index in September
Boyelle, Congo
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, June, July, November and December (UV index 7).
The months with the lowest UV index are August, September and October (UV index 6).
Average cloud cover in September
Boyelle, Congo
- Average cloud cover in September: 49
The month with the most cloud cover is October (Cloud cover 53).
The month with the least cloud cover is January (Cloud cover 18).
Average visibility in September
Boyelle, Congo
- Average visibility in September: 7km
The months with the highest visibility are January, February and December (10km).
The months with the lowest visibility are September and October (7km).








