September weather forecast
Doumani, Congo

The first month of the spring, September, is still a tropical month in Doumani, Congo, with an average temperature varying between 30.1°C (86.2°F) and 20.9°C (69.6°F).

Temperature

Doumani, Congo, observes a minor difference in average high-temperatures between August's 31.8°C (89.2°F) and September's 30.1°C (86.2°F). Doumani's average low-temperature is measured at an agreeable 20.9°C (69.6°F) during September.

Heat index

The heat index for September is estimated at a very hot 39°C (102.2°F). Special measures are necessary to avoid heat cramps and heat exhaustion. Persistent activity could result in heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', is a metric representing the sensation of warmth when air temperature and moisture come together. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Under direct sun rays, the felt temperature might be heightened, with the heat index increasing by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
Evaporating sweat, an outcome of perspiration, is key in assisting the human body to moderate its temperature. When relative humidity is heightened, it slows the rate of evaporation, thereby decreasing the body's ability to shed heat and creating a sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in September is 83%.

Rainfall

In September, the rain falls for 28.4 days. Throughout September, 171mm (6.73") of precipitation is accumulated. Throughout the year, there are 295.9 rainfall days, and 1481mm (58.31") of precipitation is accumulated.

Daylight

The average length of the day in September in Doumani is 12h and 6min.
On the first day of September in Doumani, Congo, sunrise is at 06:06 and sunset at 18:10. On the last day of the month, sunrise is at 05:54 and sunset at 18:02 WAT.

Sunshine

The average sunshine in September in Doumani is 8h.

UV index

September is the month with the lowest UV index in Doumani, with an average maximum UV index of 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 5 during September leads to these instructions:
Make use of precautions - It is urged to ward off sun damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. A hat with a broad brim is indispensable, filtering out up to half of UV rays.