September weather forecast
Ndjole, Gabon

September is characterized by a significant increase in rainfall to 62mm (2.44"), evident of the shift towards a more rainy season. Temperatures remain steady, showcasing the phenomenal weather predictability in Ndjole. The annual consistency in daylight hours means that the high rainfall doesn't prevent residents from pursuing outdoor activities. Although cloud coverage increases slightly, it doesn't impact much on the regular sunlight distribution. Overall, September maintains the gradually evolving gradation in weather changes as residents anticipate the coming months.

Temperature

Ndjole sees an average high-temperature of a still tropical 30.7°C (87.3°F) as it transitions into September, consistent with August. An average low-temperature of 22.2°C (72°F) is recorded during the nights in September.

Heat index

The average heat index in September is calculated to be a scorching 40°C (104°F). Exercise more precautions, heat cramps and heat exhaustion are potential risks. Continuous activity could precipitate heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Heat absorption that surpasses the body's shedding capability can lead to overheating and varying levels of dehydration.

Humidity

In Ndjole, the average relative humidity in September is 80%.

Rainfall

In September, the rain falls for 19.2 days. Throughout September, 62mm (2.44") of precipitation is accumulated. In Ndjole, during the entire year, the rain falls for 263 days and collects up to 1311mm (51.61") of precipitation.

Daylight

In September, the average length of the day is 12h and 7min.
On the first day of September, sunrise is at 06:13 and sunset at 18:20. On the last day of the month, sunrise is at 06:03 and sunset at 18:10 WAT.

Sunshine

The month with the least sunshine is September, with an average of 5.2h of sunshine.

UV index

March, May through November, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: In September, a regular UV index of 6 translates into these guidelines:
Deflect overexposure. Sun protection is a necessity. Limit direct sun exposure and seek shade between 10 a.m. and 4 p.m., the time of the most intense UV radiation, noting that shade structures may not provide total sun protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.