Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September, on average, is the coldest month, registering a high temperature of 28.1°C (82.6°F) and a low of 19.9°C (67.8°F).Heat index
Throughout September, the heat index is estimated at a hot 34°C (93.2°F). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', takes into account both air temperature and humidity to illustrate what people actually feel. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
Humidity
In Sembe, Congo, the average relative humidity in September is 88%.Rainfall
In Sembe, during September, the rain falls for 28.9 days and regularly aggregates up to 192mm (7.56") of precipitation. In Sembe, during the entire year, the rain falls for 301.4 days and collects up to 1535mm (60.43") of precipitation.Daylight
In Sembe, the average length of the day in September is 12h and 7min.On the first day of the month, sunrise is at 05:57 and sunset at 18:05. On the last day of September, sunrise is at 05:48 and sunset at 17:54 WAT.
Sunshine
In Sembe, the average sunshine in September is 6.2h.UV index
The month with the lowest UV index is September, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum UV index of 5 in September translates into the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
How hot does it get in September?
What is the average humidity in September?
How many days does it rain in September?
How many hours of daylight does Sembe have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
When is the lowest UV index?
What is the UV index intensity in September?
Average temperature in September
Sembe, Congo
- Average high temperature in September: 28.1°C
The warmest month (with the highest average high temperature) is January (33.3°C).
The month with the lowest average high temperature is September (28.1°C).
- Average low temperature in September: 19.9°C
The month with the highest average low temperature is March (21.1°C).
The coldest months (with the lowest average low temperature) are August and December (19.8°C).
Average pressure in September
Sembe, Congo
- 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 February (1009.5mbar).
Average wind speed in September
Sembe, Congo
- Average wind speed in September: 4.3km/h
The windiest months (with the highest average wind speed) are February and August (4.7km/h).
The calmest month (with the lowest average wind speed) is November (3.7km/h).
Average humidity in September
Sembe, Congo
- Average humidity in September: 88%
The month with the highest relative humidity is October (89%).
The month with the lowest relative humidity is January (63%).
Average rainfall in September
Sembe, Congo
- Average rainfall in September: 192mm
The wettest month (with the highest rainfall) is October (266mm).
The driest month (with the least rainfall) is January (28mm).
Average rainfall days in September
Sembe, Congo
- Average rainfall days in September: 28.9 days
The month with the highest number of rainy days is October (30.4 days).
The month with the least rainy days is January (15.1 days).
Average daylight in September /
Average sunshine in September
Sembe, Congo
- Average daylight in September: 12h and 1min
The month with the longest days is June (Average daylight: 12h and 12min).
The month with the shortest days is December (Average daylight: 12h and 0min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is January (Average sunshine: 9h and 18min).
The month with the least sunshine is October (Average sunshine: 5h and 30min).
Average sunshine days in September
Sembe, Congo
- Average sunshine days in September: 0.5 days
The month with the most sunshine days is January (14.1 days).
The month with the least sunshine days is October (0.3 days).
Average UV index in September
Sembe, Congo
- Average UV index in September: 5
The month with the highest UV index is January (UV index 7).
The month with the lowest UV index is September (UV index 5).
Average cloud cover in September
Sembe, Congo
- Average cloud cover in September: 69
The month with the most cloud cover is October (Cloud cover 70).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in September
Sembe, Congo
- Average visibility in September: 6km
The months with the highest visibility are January and December (9km).
The months with the lowest visibility are May, August, September and October (6km).
