September weather forecast
Ntoum, Gabon

In September, Ntoum experiences return to somewhat wetter conditions, aided by a rise in temperature, humidity, and a drop in wind speed. The climate remains generally warm, characterised by consistent daylight hours and UV index throughout this period. Though the weather may be more humid compared to the previous months, it remains largely moderate. September is marked by a considerable jump in rainfall to 76mm (2.99"), reaffirming the return of the wetter season.

Temperature

The beginning of September in Ntoum records an average high-temperature of a still warm 27.8°C (82°F), almost echoing the conditions of the previous month. The month of September in Ntoum is marked by an average minimum temperature of 23.5°C (74.3°F), slightly cooler than its daytime counterpart.

Heat index

The heat index in September is computed to be a hot 32°C (89.6°F). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'felt air temperature' or 'real feel', determines the feeling of heat when you account for the relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals are generally in more danger than adults due to their lower capacity to sweat. Moreover, their large skin surface in relation to their small bodies and the increased heat generation from their activities makes them more vulnerable.

Humidity

The average relative humidity in September is 83%.

Rainfall

In Ntoum, in September, during 17.7 rainfall days, 76mm (2.99") of precipitation is typically accumulated. In Ntoum, during the entire year, the rain falls for 274.1 days and collects up to 1477mm (58.15") of precipitation.

Daylight

In September, the average length of the day in Ntoum is 12h and 7min.
On the first day of the month, sunrise is at 06:17 and sunset at 18:24. On the last day of September, in Ntoum, sunrise is at 06:07 and sunset at 18:14 WAT.

Sunshine

With an average of 5.1h of sunshine, September has the least sunshine of the year in Ntoum.

UV index

The months with the lowest UV index are June through October, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The daily high UV index of 6 during September translates into the following recommendations:
Refrain from overexposure. Fair-skinned individuals could burn in under 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.