September weather forecast
Ossouélé, Gabon

The first month of the spring, September, is still a tropical month in Ossouélé, Gabon, with an average temperature varying between 21.3°C (70.3°F) and 30.1°C (86.2°F).

Temperature

As September unfolds, the average high-temperature reaches a still hot 30.1°C (86.2°F), hinting at a slight fluctuation from the previous month. Ossouélé's average low-temperature in September is measured at a pleasant 21.3°C (70.3°F).

Heat index

Throughout September, the heat index is appraised at a fiery hot 38°C (100.4°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is an aggregate value of air's warmth and moisture to show the human-felt temperature. The individual's impression of temperature can be affected by numerous factors such as metabolic variations, physical exertion, and attire. Direct sun rays can make one feel hotter, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. During high air temperature and humidity (high heat index), the process of perspiration is hindered, intensifying the sensation of heat. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

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

Rainfall

In Ossouélé, Gabon, in September, it is raining for 26.1 days, with typically 144mm (5.67") of accumulated precipitation. Throughout the year, in Ossouélé, there are 293.4 rainfall days, and 1534mm (60.39") of precipitation is accumulated.

Daylight

In Ossouélé, the average length of the day in September is 12h and 7min.
On the first day of the month, sunrise is at 05:59 and sunset at 18:05. On the last day of September, sunrise is at 05:48 and sunset at 17:56 WAT.

Sunshine

The average sunshine in September in Ossouélé is 8.1h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: In September, a daily maximum UV index of 6 leads to the following instructions:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.