September weather forecast
Bandundu, Democratic Republic of Congo

As summer starts winding down, September brings the first signs of relief with minor reductions in temperature, high being 33.4°C (92.1°F). The rainfall quantity also picks up slightly to 64mm (2.52"), signaling the onset of a sub-seasonal shift. However, despite these changes, the sunshine duration remains steady, allowing for pleasant outdoor activities. September comes as a transition month, making it a perfect time for gentle adaption to the upcoming climatic alterations.

Temperature

Entering September, the average high-temperature is recorded at a hot 33.4°C (92.1°F), exhibiting a minimal shift from August's 35.4°C (95.7°F). Throughout September, the nighttime temperature averages to a warm 24°C (75.2°F).

Heat index

The heat index value during September is estimated at a scorching 43°C (109.4°F). Forewarned: Heat cramps and heat exhaustion are anticipated. Ongoing physical activity increases the likelihood of heatstroke.
It is important to note that the heat index values are for shaded areas and light wind scenarios. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', combines both the air temperature and the humidity level to give a perceived human temperature. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. Heightened relative humidity interferes with the body's usual cooling mechanism by reducing evaporation, subsequently decreasing the body's cooling rate and increasing the sensation of heat. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Bandundu, the average relative humidity in September is 65%.

Rainfall

In Bandundu, in September, during 19.6 rainfall days, 64mm (2.52") of precipitation is typically accumulated. In Bandundu, during the entire year, the rain falls for 230.8 days and collects up to 972mm (38.27") of precipitation.

Daylight

The average length of the day in September is 12h and 5min.
On the first day of the month, sunrise is at 05:48 and sunset at 17:51. On the last day of September, in Bandundu, sunrise is at 05:36 and sunset at 17:44 WAT.

Sunshine

In September, the average sunshine is 9.1h.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. January through December, with an average maximum UV index of 7, are months with the lowest UV index. 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: In September, the average maximum UV index of 7 translates into the following recommendations:
Shun overexposure. Protection from sun ravages is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.