September weather forecast
Paris, Congo

September, the first month of the autumn in Paris, is still a hot month, with an average temperature varying between 30.5°C (86.9°F) and 21.2°C (70.2°F).

Temperature

September, characterized by an average high temperature of 30.5°C (86.9°F) and a low temperature of 21.2°C (70.2°F), is generally the coldest month.

Heat index

In September, the average heat index is computed to be a blisteringly hot 40°C (104°F). Extra safeguards are necessary to prevent heat exhaustion and heat cramps. Prolonged activity might cause heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', gives a temperature feeling by integrating air temperature and humidity. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
Normally, the human body cools itself through perspiration, which removes excessive heat by evaporating sweat. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

The average relative humidity in September in Paris, Congo, is 83%.

Rainfall

In September, the rain falls for 25.8 days. Throughout September, 106mm (4.17") of precipitation is accumulated. Throughout the year, there are 254.7 rainfall days, and 1034mm (40.71") of precipitation is accumulated.

Daylight

In September, the average length of the day in Paris is 12h and 7min.
On the first day of the month, sunrise is at 05:52 and sunset at 18:01. On the last day of September, in Paris, Congo, sunrise is at 05:44 and sunset at 17:50 WAT.

Sunshine

In Paris, the average sunshine in September is 7.5h.

UV index

The months with the lowest UV index in Paris, Congo, are June, August through October, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 6 in September transforms into the following instructions:
Stand by precautions and apply sun safety measures. Evading sunburn is of great importance. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.