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 (6.5"), a steady decline from August.

Temperature

The high-temperature average in September for Douala is a still moderately hot 28.7°C (83.7°F), staying closely aligned with August's conditions. Douala, in September, witnesses an average low-temperature of 23.4°C (74.1°F).

Heat index

September's heat index is estimated at a sweltering 35°C (95°F). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.
One should consider that heat index numbers are for shaded settings and light wind. 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 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. The impact of temperature is individual, as people's perception of weather may change based on their body mass, height, and physical activity. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. In the presence of elevated relative humidity, the evaporation rate decreases. This reduction leads to increased body heat retention compared to conditions of dry air. When body heat isn't effectively managed, risks of dehydration and overheating amplify.

Humidity

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

Rainfall

In September, the rain falls for 25.8 days. Throughout September, 165mm (6.5") of precipitation is accumulated. In Douala, Cameroon, during the entire year, the rain falls for 272.8 days and collects up to 1382mm (54.41") of precipitation.

Sea temperature

In Douala, the average seawater temperature in September is 26.6°C (79.9°F).
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

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

Sunshine

In September, the average sunshine 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 value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: During September, 6 as the daily maximum UV index converts into the following advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Caution! Sand and water surfaces escalate the UV intensity from the Sun.