September weather forecast
Franceville, Gabon

The weather in Franceville, Gabon, takes a dramatic turn in September as rainfall records significant growth reaching 144mm (5.67") across approximately 26 days. Although a wet month, sunshine persists for a satisfactory 8.1 hours per day, hinting at a mix of sun and showers. Despite the growth in precipitation, atmospheric pressure and relative humidity do not deviate considerably. Visitors can anticipate sudden rain showers during the day or late evenings. The blend of weather patterns in September creates a unique and vibrant atmosphere in the city.

Temperature

Franceville sees the arrival of September with an average high-temperature of a still hot 30.1°C (86.2°F), indicating a subtle variation from August. September sees the temperature falling to a mean low of 21.3°C (70.3°F).

Heat index

The heat index in September is appraised at a sweltering 38°C (100.4°F). More safety actions are required, heat exhaustion and heat cramps are probable. Long-term activity may precipitate heatstroke.
When referencing the heat index, its values are suitable for shady environments and light breezes. Direct sunshine exposure could raise heat index values by as much as 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', arises from combining readings of air temperature and relative moisture content. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. One's exposure to direct sunlight has the potential to intensify the heat sensation, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. The body is at risk of dehydration and related complications when it fails to shed excessive heat.

Humidity

In Franceville, the average relative humidity in September is 81%.

Rainfall

In Franceville, Gabon, during September, the rain falls for 26.1 days and regularly aggregates up to 144mm (5.67") of precipitation. In Franceville, Gabon, during the entire year, the rain falls for 293.4 days and collects up to 1534mm (60.39") of precipitation.

Daylight

In September, the average length of the day is 12h and 6min.
On the first day of September, sunrise is at 06:02 and sunset at 18:07. On the last day of the month, sunrise is at 05:51 and sunset at 17:59 WAT.

Sunshine

In September, the average sunshine in Franceville is 8.1h.

UV index

In Franceville, Gabon, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 6 during September translates into the following directions:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.