September weather forecast
Mounongo, Gabon

September, the first month of the spring in Mounongo, is still a hot month, with an average temperature ranging between min 21.1°C (70°F) and max 30.9°C (87.6°F).

Temperature

The transition into September shows a subtle variation to a still tropical 30.9°C (87.6°F) from August's 32.3°C (90.1°F) in the average high-temperature. In Mounongo, the average nighttime temperature during September is a pleasant 21.1°C (70°F).

Heat index

For September, the heat index is calculated to be a blistering 42°C (107.6°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', embodies the combination of air temperature and moisture content to illustrate perceived heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Children often fail to understand the importance of rest and rehydration. Thirst is a late manifestation of dehydration - hence, it is crucial to stay hydrated, especially during ongoing physical activities.
The body's innate mechanism to counteract overheating is through perspiration, as it leverages the cooling effects of sweat evaporation. Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating. Heat disorders may be on the horizon when body temperatures rise from inadequate heat management.

Humidity

In Mounongo, Gabon, the average relative humidity in September is 83%.

Rainfall

In Mounongo, in September, it is raining for 28.1 days, with typically 149mm (5.87") of accumulated precipitation. In Mounongo, during the entire year, the rain falls for 311.1 days and collects up to 1474mm (58.03") of precipitation.

Daylight

The average length of the day in September is 12h and 7min.
On the first day of the month, sunrise is at 06:09 and sunset at 18:14. On the last day of September, sunrise is at 05:58 and sunset at 18:05 WAT.

Sunshine

In September, the average sunshine is 7.7h.

UV index

June, August through October, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 6 in September interprets into the following advice:
Act on precautions and pay attention to sun safety recommendations. Avoidance of sunburn is obligatory. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.