September weather forecastBitam, Gabon
September
Weather in September
September marks the start of another high humidity season with increased rainfall in Bitam, Gabon. There's an escalation in rainfall to 164mm (6.46"), however, the sunshine duration shrinks further. The only silver lining within the month is the decrease in wind and gust speed, manifesting a much calmer atmosphere. Despite the high humidity and constant cloud cover, UV index remains the same, attributing to a consistent weather trend.Temperature
Bitam sees an almost indistinguishable change in average high-temperatures from August to a still moderately hot 28.6°C (83.5°F) in September. Bitam usually reports an average low-temperature of 20.3°C (68.5°F) during the month of September.Heat index
The average heat index in September is evaluated at a sweltering 36°C (96.8°F). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Evaluating the heat index requires understanding its values in the shade and with gentle winds. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. The impact of weather is personal, differing among a variety of people based on differences in body mass, height, and the level of physical exertion. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. Excessive heat gain, when not shed effectively by the body, can result in increasing body temperatures and related hazards.
Humidity
The average relative humidity in September in Bitam is 90%.Rainfall
In Bitam, Gabon, in September, during 28.3 rainfall days, 164mm (6.46") of precipitation is typically accumulated. Throughout the year, in Bitam, there are 317.5 rainfall days, and 1608mm (63.31") of precipitation is accumulated.Daylight
In Bitam, the average length of the day in September is 12h and 8min.On the first day of September, sunrise is at 06:09 and sunset at 18:18. On the last day of the month, sunrise is at 06:00 and sunset at 18:06 WAT.
Sunshine
In Bitam, Gabon, the average sunshine in September is 4.7h.UV index
June through November, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bitam, Gabon
- Average high temperature in September: 28.6°C
The warmest month (with the highest average high temperature) is February (32.3°C).
The month with the lowest average high temperature is October (28.5°C).
- Average low temperature in September: 20.3°C
The months with the highest average low temperature are February and April (21.1°C).
The coldest month (with the lowest average low temperature) is July (19.7°C).
Average pressure in September
Bitam, Gabon
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is July (1013.9mbar).
The month with the lowest atmospheric pressure is February (1010.2mbar).
Average wind speed in September
Bitam, Gabon
- Average wind speed in September: 4.4km/h
The windiest month (with the highest average wind speed) is August (4.7km/h).
The calmest months (with the lowest average wind speed) are May and November (3.5km/h).
Average humidity in September
Bitam, Gabon
- Average humidity in September: 90%
The month with the highest relative humidity is October (91%).
The month with the lowest relative humidity is January (78%).
Average rainfall in September
Bitam, Gabon
- Average rainfall in September: 164mm
The wettest month (with the highest rainfall) is October (227mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in September
Bitam, Gabon
- Average rainfall days in September: 28.3 days
The month with the highest number of rainy days is October (29.4 days).
The month with the least rainy days is December (20.5 days).
Average daylight in September /
Average sunshine in September
Bitam, Gabon
- Average daylight in September: 12h and 6min
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: 4h and 42min
The month with the most sunshine is January (Average sunshine: 8h and 18min).
The month with the least sunshine is October (Average sunshine: 4h and 30min).
Average sunshine days in September
Bitam, Gabon
- Average sunshine days in September: 0.3 days
The month with the most sunshine days is January (8.4 days).
The month with the least sunshine days is September (0.3 days).
Average UV index in September
Bitam, Gabon
- Average UV index in September: 5
The months with the highest UV index are January, February, March, April, May and December (UV index 6).
The months with the lowest UV index are June, July, August, September, October and November (UV index 5).
Average cloud cover in September
Bitam, Gabon
- Average cloud cover in September: 81
The months with the most cloud cover are September and October (Cloud cover 81).
The month with the least cloud cover is January (Cloud cover 54).
Average visibility in September
Bitam, Gabon
- Average visibility in September: 5km
The month with the highest visibility is January (7km).
The months with the lowest visibility are March, April, May, June, July, August, September, October and November (5km).





