September weather forecast
Nkolabona, Gabon

The first month of the autumn, September, is still a warm month in Nkolabona, Gabon, with temperature in the range of an average low of 20.7°C (69.3°F) and an average high of 29.1°C (84.4°F).

Temperature

Transitioning from August to September, Nkolabona observes an average high-temperature of a still moderately hot 29.1°C (84.4°F), differing subtly from the previous month. The mean low-temperature during September nights is an agreeable 20.7°C (69.3°F).

Heat index

For most parts of September, the heat index is appraised at a sweltering 37°C (98.6°F). Adopt additional preventive measures, heat cramps and heat exhaustion are potential outcomes. Prolonged activity may trigger heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is a single figure representing how weather conditions feel when combining temperature and humidity. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.

Humidity

In September, the average relative humidity in Nkolabona is 87%.

Rainfall

In Nkolabona, in September, it is raining for 26.1 days, with typically 146mm (5.75") of accumulated precipitation. In Nkolabona, during the entire year, the rain falls for 313.6 days and collects up to 1610mm (63.39") of precipitation.

Daylight

The average length of the day in September is 12h and 7min.
On the first day of September, sunrise is at 06:08 and sunset at 18:17. On the last day of the month, sunrise is at 05:59 and sunset at 18:06 WAT.

Sunshine

In Nkolabona, Gabon, the average sunshine in September is 5.5h.

UV index

September and October, with an average maximum UV index of 5, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: During September, 5 as the daily maximum UV index converts into the following advice:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.