September weather forecast
Douala, Cameroon

By September, Douala begins to reclaim its inherent warmth as the rainy season concludes. Both rainfall frequency and volume decrease. A gradual increase in sunlight brings a mild pleasantness to the otherwise humid atmosphere. Despite this, Douala still receives considerable rain, but nowhere near the amount received in the preceding months. September rainfall averages at 165mm, a steady decline from August.

Temperature

The arrival of September in Douala coincides with an average high-temperature of a still warm 28.7°C, indicating a minimal shift from August's 27.9°C. Nighttime temperatures in September average to a still warm 23.4°C.

Heat index

The heat index in September is computed to be a very hot 35°C. Adopt extra preventive measures, the occurrence of heat cramps and heat exhaustion is likely. Heatstroke may follow extended activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', melds the effects of warmth and moisture to generate a feeling of heat. 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. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Kids are usually more vulnerable than adults, given their lesser sweating ability. Along with their larger skin surface relative to their small stature and the excess heat due to their activity, their risk is amplified.
In response to overheating, the human body perspires to cool down, mainly through the evaporation of sweat. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. If heat absorption exceeds the body's cooling ability, body temperature can elevate, resulting in potential thermal illnesses.

Humidity

In September, the average relative humidity in Douala, Cameroon, is 84%.

Rainfall

In Douala, during September, the rain falls for 25.8 days and regularly aggregates up to 165mm of precipitation. In Douala, during the entire year, the rain falls for 272.8 days and collects up to 1382mm of precipitation.

Sea temperature

In September, the average sea temperature in Douala is 26.6°C.
Note: In any water activity, temperatures between 25°C and 29°C are viewed as magnificent and exceptionally pleasant for prolonged enjoyment.

Daylight

The average length of the day in September is 12h and 8min.
On the first day of September in Douala, sunrise is at 06:15 and sunset at 18:26. On the last day of the month, sunrise is at 06:08 and sunset at 18:13 WAT.

Sunshine

In Douala, the average sunshine in September is 7h.

UV index

June through September, with an average maximum UV index of 6, are months with the lowest UV index in Douala. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In September, the maximum UV index of 6 transforms into these recommendations:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take caution! The UV rays from the Sun gain strength from sand and water reflections.