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
The advent of September sees the average high-temperature at a still moderately hot 27°C (80.6°F), subtly shifted from August's 26.4°C (79.5°F). Nights in September exhibit a minor reduction to an average low temperature of 23.6°C (74.5°F).Heat index
The heat index in September is appraised at a tropical 30°C (86°F). If exposure and activity are sustained, they might cause a feeling of weariness, resulting in heat cramps.It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', embodies the combination of air temperature and moisture content to illustrate perceived heat. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In September, the average relative humidity is 85%.Rainfall
In Ayémé, during September, the rain falls for 24.4 days and regularly aggregates up to 97mm (3.82") of precipitation. In Ayémé, during the entire year, the rain falls for 301.4 days and collects up to 1329mm (52.32") of precipitation.Daylight
In September, the average length of the day is 12h and 7min.On the first day of the month, sunrise is at 06:16 and sunset at 18:23. On the last day of September, sunrise is at 06:06 and sunset at 18:13 WAT.
Sunshine
The average sunshine in September is 6.2h.UV index
June through October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 6 during September translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What are the months with the lowest UV index?
What is the UV index reading in September?
Average temperature in September
Ayémé, Gabon
- Average high temperature in September: 27°C
The warmest month (with the highest average high temperature) is March (29.8°C).
The month with the lowest average high temperature is July (26.3°C).
- Average low temperature in September: 23.6°C
The month with the highest average low temperature is March (25.6°C).
The coldest month (with the lowest average low temperature) is July (22.7°C).
Average pressure in September
Ayémé, Gabon
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is July (1013.9mbar).
The months with the lowest atmospheric pressure are February and March (1010mbar).
Average wind speed in September
Ayémé, Gabon
- Average wind speed in September: 11.5km/h
The windiest month (with the highest average wind speed) is August (12.7km/h).
The calmest month (with the lowest average wind speed) is April (7.8km/h).
Average humidity in September
Ayémé, Gabon
- Average humidity in September: 85%
The month with the highest relative humidity is October (86%).
The months with the lowest relative humidity are February and March (80%).
Average rainfall in September
Ayémé, Gabon
- Average rainfall in September: 97mm
The wettest month (with the highest rainfall) is October (204mm).
The driest month (with the least rainfall) is July (35mm).
Average rainfall days in September
Ayémé, Gabon
- Average rainfall days in September: 24.4 days
The month with the highest number of rainy days is October (29.1 days).
The month with the least rainy days is July (17.6 days).
Average daylight in September /
Average sunshine in September
Ayémé, Gabon
- 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 6min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is February (Average sunshine: 8h and 54min).
The month with the least sunshine is August (Average sunshine: 6h and 6min).
Average sunshine days in September
Ayémé, Gabon
- Average sunshine days in September: 2.5 days
The month with the most sunshine days is July (7.8 days).
The month with the least sunshine days is October (1.1 days).
Average UV index in September
Ayémé, Gabon
- Average UV index in September: 6
The months with the highest UV index are January, February, March, April, May, November and December (UV index 7).
The months with the lowest UV index are June, July, August, September and October (UV index 6).
Average cloud cover in September
Ayémé, Gabon
- Average cloud cover in September: 66
The month with the most cloud cover is August (Cloud cover 69).
The month with the least cloud cover is February (Cloud cover 36).
Average visibility in September
Ayémé, Gabon
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September and December (10km).
The months with the lowest visibility are May, October and November (9km).
